Start by identifying whether the problem is rendering or networking. Low frame rates, visual glitches and uneven image updates are local performance symptoms. A packet-loss icon, rubber-banding, unstable latency, “Lost Connection to Host,” “Host Closed the Connection,” or “A Network error has occurred. Please try again.” points to the network path, a server, or an intermediary such as your router, security software or ISP. “No Compatible Servers” is often a filter problem rather than proof that the server list is empty.
Hell Let Loose is a 50v50 online game, so it needs a stable broadband connection as well as a PC or console that meets its requirements. The sequence below follows Team17’s published troubleshooting paths, then helps you isolate a bad local setting from a single-server fault or a wider service incident.
What kind of Hell Let Loose lag are you seeing?
Use the symptom, not the word “lag,” to choose your first test. Performance problems are measured in frames and rendering; connection problems are measured in packet delivery, latency and the ability to remain connected to a host.
| What you notice | Most useful first path | What it usually distinguishes |
|---|---|---|
| Low FPS, graphical glitches or uneven rendering | Client-performance checks | Hardware load, drivers, files or another program on the PC |
| Packet-loss icon, rubber-banding, high or unstable latency | Network-path checks | Wi-Fi, router, ISP route, security software or server conditions |
| “Lost Connection to Host” or “Host Closed the Connection” | Network, firewall, DNS and IPv6 tests | A failed session path rather than a frame-rate problem |
| “A Network error has occurred. Please try again.” | Compare servers and check the service state | Several possible causes, including provider-side incidents |
| “No Compatible Servers” | Broaden Server Browser filters | Restrictive filters, especially platform or server-type filters on console |
Keep a short record while testing: the exact message, platform, server name, whether the server is official or community-run, approximate population, map, time and whether other servers work. Changing one thing at a time makes the result meaningful.
How do I fix low FPS and visual stutter on PC?
Follow the client-performance path when the image is slow or uneven but your character is not being pulled backward and the game is not reporting packet loss. Team17’s first-line sequence is diagnostic rather than a guaranteed cure.
1. Confirm the published requirements
The Steam requirements list a broadband Internet connection, 12 GB of RAM minimum, 16 GB recommended and 60 GB of storage. Hell Let Loose’s 50v50 battles can load both the system and the connection, so a machine below those requirements may show poor frame pacing even when your Internet route is healthy.
2. Close competing programs
Exit browsers with many tabs, launchers, recording or overlay tools and unnecessary tray applications before starting the game. Retest the same map or a similarly populated server. This is an isolation step: if the stutter disappears, re-enable programs one at a time to find the conflict instead of assuming the game files are damaged.
3. Update the graphics driver
Install the current driver supplied for your graphics hardware, restart Windows and test again. Record the driver version in your notes. If the problem began immediately after a driver change, keep that fact for support rather than repeatedly installing unrelated versions.
4. Verify the Steam installation
In Steam, open the game’s Properties, choose Installed Files and select Verify integrity of game files. Allow the process to finish, then launch the game normally. Verification can replace missing or altered files; it does not repair an ISP route or a server that has closed your connection.
5. Perform a clean boot when another service may be interfering
A clean boot starts Windows with nonessential startup services disabled. Use it as a temporary diagnostic, not as a permanent configuration: note what you disable, restart, test Hell Let Loose, then restore normal startup if the result is unchanged. If the clean boot helps, re-enable groups of services until the interfering program is identified.
6. Run System File Checker only when Windows corruption is plausible
Open an elevated Command Prompt and run:
sfc /scannowWait for the scan to complete and restart if Windows requests it. This checks protected Windows files; it is not a network repair and should not be presented as a universal game fix.
7. Try administrator permissions as a test
Team17 also lists trying Steam or the game with administrator rights. Use this to test a permissions problem, then retest under your normal account. If elevation changes the result, investigate the folder and security permissions instead of leaving every game process permanently elevated.
How do I fix packet loss, rubber-banding or unstable latency?
Network symptoms require you to compare paths. Start with several servers, test after each change and note whether official and community servers behave differently.
Use a wired connection as an isolation test
If you normally play over Wi-Fi, connect the PC or console directly to the router with Ethernet and repeat the same server test. A Cat6 cable can help isolate wireless interference or signal variation; it cannot repair ISP routing, a restrictive NAT, a crashed server or a provider-side DDoS incident. If wired play is stable while Wi-Fi is not, focus on the wireless channel, distance and router placement rather than reinstalling the game.
Test IPv6 in both states
Team17’s connectivity guidance documents testing with IPv6 enabled and disabled. Change only that setting, restart the relevant network connection and try multiple servers. Keep the state that produces a repeatable improvement, and record the original setting so you can restore it. An IPv6 change that affects one route but not another points to path compatibility, not to game rendering.
Check NAT and router rules
Find the NAT type shown by your platform or router and ask the network administrator or ISP whether it is restrictive. A restrictive NAT can prevent a stable session even when ordinary web browsing works. Team17’s current support material does not provide a definitive port-number list in the available guidance, so do not guess ports from an unrelated game or copy an unverified list. Ask the router administrator to use the platform’s documented requirements and to confirm that outbound game and anti-cheat traffic is not being blocked.
Flush DNS for “Host Closed the Connection”
On Windows, open Command Prompt and run:
ipconfig /flushdnsReconnect to the network and test again. Flushing DNS clears cached name lookups; it does not increase bandwidth or correct packet loss caused by Wi-Fi or a congested route. If the error returns on every server, continue with the firewall, IPv6 and ISP checks instead of repeating the command.
Test without a VPN
Disconnect the VPN completely, including its background service, and retest. A VPN can change the route, region and NAT behavior. If the game works only without it, provide the VPN status and the affected region to support; do not assume that changing to another VPN endpoint is a permanent fix.
Record the Steam download region and connection details
For each test, write down the Steam download region, country, measured Internet speed, VPN state and NAT type. These details help identify a regional route problem and give support something more useful than “the game is laggy.” Download speed alone does not prove that the path is suitable for a real-time match; stability and packet delivery matter as well.
How do I stop security software from blocking Hell Let Loose?
Only create exceptions when Windows Security, a firewall or antivirus is actually blocking the game. Adding broad exclusions without evidence weakens your security and may hide the real cause.
Executables Team17 lists for Lost Connection troubleshooting
Check the block or quarantine history first. If one of these files is being denied, add that specific executable to the firewall or antivirus allow-list and retest:
HLL.exeHLL_BugReportUploader.exeHLL-Win64-Shipping.exeEasyAntiCheat.exeEasyAntiCheat_Setup.exeLaunch_HLL.exe
Use the actual files in your Steam installation rather than downloading replacements from the web. After changing an exception, restart the game and test more than one server. Remove a temporary exception if it has no effect.
Check content and filtering software for persistent failures
For reports that continue after the basic checks, Team17 support has also suggested checking ad blockers, pending Windows updates, NextDNS threat detection and ISP family-protection settings. These systems can classify game or anti-cheat traffic as unwanted. Change one control at a time, record the result and restore protections that are not involved.
Support has additionally suggested deleting LauncherInfo.hllinfo and clearing files in HLL > Content > Paks for persistent reports. Treat this as a recovery step after preserving your notes, because the game may need to reacquire content. Do not delete unrelated folders or files, and verify the installation after the cleanup completes.
Why does “No Compatible Servers” appear?
First broaden the Server Browser filters. Team17’s U21 Community Feedback brief says that this message can be caused by the filters currently applied rather than by an absence of servers.
Clear restrictive filters
- Remove narrow map, name, population and ping limits.
- Check that the selected platform matches the servers you intend to see.
- On console, review both platform and server-type filters.
- Refresh the list after changing filters and allow the browser to repopulate.
If servers appear after clearing a filter, restore preferences one at a time to identify the setting that excluded them. If the list remains empty across broad filters, compare another network or platform account and check current Team17 notices before concluding that the service is offline.
How can I tell whether one server or the whole service is at fault?
Use controlled comparisons instead of relying on a single failed join.
| Test result | Likely area to investigate next |
|---|---|
| One server fails while several others work | That server, its provider or the route between you and it |
| Official servers fail but community servers work | The official-server path, region or current server-side condition |
| Community servers fail but official servers work | The affected community provider or its route |
| Many servers fail for you only | Your Wi-Fi, router, NAT, DNS, firewall, VPN or ISP path |
| Many players report failures after an update | A wider service or update-related incident |
Team17’s Update 18 connectivity brief said connection problems had become more common for many players and identified multiple possible causes, including PhysX issues and DDoS attacks affecting server providers. The visible messages included “A NETWORK ERROR HAS OCCURED. PLEASE TRY AGAIN.” and “LOST CONNECTION TO HOST.” Because those causes are different, a local reinstall cannot resolve every incident.
The U21 brief separately discussed frame-rate investigations on PC and console and noted that high-population servers appeared often in reports. That observation supports comparing a busy server with a less-populated one, but it does not prove that population is the cause of every hitch or disconnect.
What should I include in a Hell Let Loose support ticket?
Send a reproducible description rather than a general complaint. Include:
- Platform and, on PC, the Steam installation context.
- Country and Steam download region.
- Measured Internet speed and whether the test used Wi-Fi or Ethernet.
- NAT type and whether IPv6 was enabled or disabled.
- VPN status and the security software or DNS filtering in use.
- The exact on-screen error text, including capitalization where possible.
- Whether official servers, community servers or both are affected.
- Server name, map, approximate population and the time of occurrence.
- Whether the issue happens on one server, several servers or every server.
- Which client, firewall, DNS and router tests changed the result.
For performance reports, also state whether the problem is low FPS, visual stutter or a network symptom, and whether it is more noticeable on high-population servers. This prevents a frame-rate investigation from being mixed with a connection investigation.
What should I avoid when troubleshooting?
- Do not treat every hitch as Internet lag. Low FPS and packet loss need different fixes.
- Do not assume an empty browser means no servers exist. Clear filters first.
- Do not guess port numbers. The available Team17 guidance does not establish a current definitive list.
- Do not add unrestricted antivirus exceptions. Confirm a block and allow only the affected executable.
- Do not change several network settings at once. You will not know which change helped.
- Do not use a VPN as a blind speed fix. It may improve one route while worsening NAT or latency on another.
- Do not repeat DNS flushing as a cure for packet loss. It only clears cached DNS results.
- Do not delete game files without a recovery plan. Preserve your notes and use Steam verification afterward.
When is the problem outside your PC or console?
Escalate to the ISP, router administrator or Team17 when broad filter checks, multiple-server comparisons and local diagnostics point away from the client. A stable wired test that still fails on many servers, a restrictive NAT that you cannot change, or a provider-wide incident requires network or service-side action. Include your comparison results so the next party can investigate the route instead of asking you to repeat basic reinstalls.
For server administrators, provider-side DDoS incidents documented by Team17 show why a player may be unable to repair a disconnect locally. The appropriate response is to contact the hosting or network provider with timestamps, affected server identifiers and the exact errors, while players use other servers as a comparison.
Frequently Asked Questions
Can reinstalling Hell Let Loose fix connection errors?
A reinstall can replace damaged local content, but it cannot correct restrictive NAT, an ISP route, a VPN path or a server-side outage. Verify the Steam files and test the network path first; reinstall only when the local installation remains suspect after those checks.
Is Ethernet always faster than Wi-Fi for Hell Let Loose?
Ethernet is useful because it removes wireless interference and signal variation from the test, not because it guarantees a better route to every server. If wired and wireless results are identical, investigate NAT, ISP routing, DNS, security software or the server instead.
Can console players use the same Windows commands?
No. Commands such as ipconfig /flushdns and sfc /scannow apply to Windows PCs. Console players should use the platform’s network diagnostics, review platform and server-type filters, and provide NAT, region, server and timing details to support.
Why does the error return only at certain times of day?
Time-of-day patterns can indicate congestion on your household connection, ISP route or a busy server population. Record the time, map and approximate population across several sessions so support can compare a repeatable pattern rather than a single failed join.