Fix Low FPS and Stutter in Hell Let Loose: Vietnam
Use a repeatable Patch 1.3 baseline. Treat a crash, low average FPS, frame-time stutter and poor visual clarity as different problems.
Quick performance checklist
- Install the current game build and restart after the update.
- Confirm the PC meets the official minimum or recommended baseline.
- Reset carried-over video settings if the problem started after an older test build.
- Choose one map, resolution and frame-rate target for comparison.
- Change one setting at a time and record average FPS, stutter and crashes separately.
Official PC requirements
| Component | Minimum | Recommended |
|---|---|---|
| OS | Windows 10 64-bit | Windows 11 64-bit |
| CPU | Intel Core i5-10600K / AMD Ryzen 5 3600X | Intel Core i5-12600K / AMD Ryzen 5 7600X |
| Memory | 16 GB RAM | 16 GB RAM |
| GPU | RTX 2060 Super / RX 6600 XT | RTX 3060 Ti / RX 6900 XT |
| API / storage | DirectX 12 / 30 GB | DirectX 12 / 30 GB |
| Steam target note | 1080p/60, TSR 71% or DLSS Ultra Performance | 1080p/60, native TSR High or DLSS Balanced |
These are store-page targets, not a promise that every full 100-player match will hold the same frame rate. Map, player density, drivers, background load and later patches can change the result.
What Patch 1.3 changed
Patch 1.3 adds client and server stability work, including performance improvements while travelling through Tunnels and in the Barracks. It also includes further console image-quality work and more than 100 fixes across the six launch maps.
For AMD GPU crashes, the developer says disabling gore will likely reduce their frequency. This is a temporary workaround, not proof that every AMD crash has one cause or one fix. FSR 4.1 is currently targeted for Update 1.5 on supported hardware.
A launch-build workaround is not automatically correct after Patch 1.3. Remove temporary changes one at a time only when you know how to restore them.
Record a controlled baseline
1. Name the symptom
Write down whether the problem is low average FPS, sharp frame-time spikes, a freeze, a crash, texture pop-in or poor visibility. One graphics change cannot prove it fixes all six.
2. Keep the test comparable
Use the same resolution, display mode and a comparable live-match scene. Do not compare a quiet tutorial area with a full firefight.
3. Capture useful numbers
Record the build, map, player count, hardware, resolution, reconstruction mode and the result. Note both average frame rate and disruptive drops.
Change one variable at a time
Start with in-game settings. After each change, repeat the same short test and keep or undo the change based on evidence. If the result is unchanged, restore the previous value before moving on.
- Confirm resolution and reconstruction mode before judging quality.
- Lower one expensive visual group, then repeat the same scene.
- Separate a visibility preference from a measurable performance result.
- Close unnecessary background capture or overlay software for one comparison.
- Recheck after a major patch instead of keeping a permanent “magic” preset.
If the game crashes instead
A crash is not proof that graphics quality is too high. Save the error, build, GPU, driver version and the action immediately before the crash. Check the current official thread before applying launch parameters copied from an older build.