Clair Obscur: Expedition 33 Stuttering Fix (Shader & Traversal)
Published
On this page
Most Clair Obscur: Expedition 33 stuttering is Unreal Engine 5 shader-compilation and traversal hitching — fix it by clean-installing your GPU driver, deleting the shader cache in %LocalAppData%\Sandfall\Saved, capping your frame rate, and (on AMD) turning Radeon Anti-Lag off. The stutter is worst in the prologue and settles once you reach the open areas, so do not judge your whole run by the opening hour. This guide walks through every fix in the order most likely to work.
Why Expedition 33 stutters
Expedition 33 runs on Unreal Engine 5, and like most UE5 games its stutter comes from two things: shader compilation (the engine builds GPU shaders in the background during cutscenes and movement, hitching whenever it hits one it hasn’t cached) and traversal stutter (new areas streaming in as you move). It is most pronounced in the prologue before the caches warm up. None of the fixes below require a mod — they target those two causes directly.
| Symptom | Most likely cause | Primary fix |
|---|---|---|
| Hitching in the prologue, then improves | Shader compilation warming up | Clear shader cache; let it rebuild |
| Stutter returned after a driver update | Stale shader cache | Delete .upipelinecache / .ushaderprecache |
| Periodic stutter on a Radeon GPU | AMD Anti-Lag | Turn Radeon Anti-Lag off |
| Feels choppy despite a high average FPS | Uneven frame times | Cap FPS below your 1% lows |
| Long hitches while running through areas | Traversal + slow storage | Install on an SSD; lower texture settings |
Fix 1 — Clean-install your GPU driver
Start with a clean driver install, not an install-over-the-top. Corrupt or leftover driver files are a leading cause of UE5 stutter, and a clean install also clears stale driver-side shader caches. Use Display Driver Uninstaller in Safe Mode, then install the latest NVIDIA, AMD, or Intel driver — full steps are in our clean GPU driver install with DDU guide.
Fix 2 — Delete the shader cache
If stutter appeared or got worse after a driver or game update, the game’s shader cache is stale. The old files are not removed automatically:
- Fully close Expedition 33.
- Open File Explorer and paste
%LocalAppData%\Sandfall\Savedinto the address bar. - Delete the
.upipelinecacheand.ushaderprecachefiles (leave your save files alone). - Relaunch. The first session recompiles shaders — expect some hitching once, then it smooths out.
This also fixes the game hanging on the startup screen. For the general technique across games, see clearing the shader cache to fix stuttering.
Fix 3 — Turn off AMD Radeon Anti-Lag
On Radeon GPUs, Radeon Anti-Lag is a known cause of periodic stutter in this game. Open AMD Software: Adrenalin Edition, open the Expedition 33 game profile (or the global Graphics tab), and set Radeon Anti-Lag to Off. Many AMD users report this alone removes their stutter. NVIDIA users can skip this step — leave NVIDIA Reflex enabled, which does not have the same issue. For the rest of the AMD panel, see our best AMD Radeon settings for gaming.
Fix 4 — Cap your frame rate for even frame times
Smoothness is about frame-time consistency, not peak FPS. An uncapped frame rate that swings between 90 and 55 feels worse than a rock-steady 60. Cap your FPS a few frames below what your system holds in the heaviest fights — if your 1% lows sit near 65, cap at 60. Set it in the in-game frame-rate limiter, or per game in the NVIDIA/AMD control panel. Pair the cap with VSync or your monitor’s G-Sync/FreeSync for tear-free, even pacing.
Fix 5 — Lower the settings that drive Lumen
Expedition 33’s heaviest setting is Global Illumination, which powers UE5’s Lumen lighting. Dropping it from Epic to High is the biggest frametime win with almost no visual loss, and it reduces the GPU spikes that show up as stutter. Also set Shadows to High, keep Texture Quality matched to your VRAM (drop it one step if you see traversal hitching), and enable DLSS (NVIDIA) or XeSS (AMD/Intel) at Quality to give the GPU headroom. The full list is in our best Expedition 33 settings for FPS.
Fix 6 — Install on an SSD and free up system resources
UE5 traversal stutter is far worse from a hard drive — the engine cannot stream assets fast enough, so it hitches when you enter a new area. Move the game to an SSD if it is on an HDD. Then close VRAM- and CPU-hungry background apps (browsers with many tabs, Wallpaper Engine, Discord hardware acceleration) before launching, and make sure Windows is set to the High Performance or Balanced power plan.
Fix 7 — Reset broken settings
If performance suddenly tanked or options look wrong, reset the game’s config: close the game, go to %LocalAppData%\Sandfall\Saved\Config, and delete GameUserSettings.ini. The game regenerates it with defaults on the next launch, and you can re-run the built-in benchmark to re-tune from a clean baseline.
Related guides
Frequently asked questions
Why is Clair Obscur: Expedition 33 stuttering on PC?
Most of it is Unreal Engine 5 shader-compilation and traversal stutter, and it is worst in the prologue before it settles once you reach the open areas. The game compiles shaders in the background during cutscenes and movement, so an older CPU or a HDD makes the hitching much more noticeable. Clean-installing your GPU driver, deleting the shader cache, and installing on an SSD address the large majority of cases.
How do I clear the shader cache in Expedition 33?
Close the game, open File Explorer to %LocalAppData%\Sandfall\Saved, and delete the .upipelinecache and .ushaderprecache files. The game rebuilds them on the next launch. Do this especially after a GPU driver update — the old shader files are not deleted automatically and stale caches are a leading cause of stutter and startup hangs.
Does turning off AMD Anti-Lag fix Expedition 33 stutter?
Yes, on many Radeon systems. Open AMD Software: Adrenalin Edition, find the Expedition 33 profile (or the global Graphics tab), and set Radeon Anti-Lag to Off. A number of AMD users report that Anti-Lag specifically causes periodic stutter in this game, and disabling it smooths the frame time. NVIDIA users do not need this step.
Should I force DirectX 11 to reduce stutter in Expedition 33?
Only as a last resort on a low-end system. Forcing DX11 can reduce shader-compilation stutter, but it causes missing textures and other visual glitches in this UE5 game, so it is a trade-off, not a clean fix. Try the shader-cache clear, a frame cap, and lowering Global Illumination first — those solve most stutter without breaking visuals.
What frame rate cap stops the stutter in Expedition 33?
Cap your FPS a few frames below what your PC can consistently hold — for example 60 if your 1% lows sit around 65–70. A stable, capped frame rate produces even frame times, which reads as smoothness, whereas an uncapped rate that swings wildly feels like stutter even at a high average. Set the cap in-game, or in the NVIDIA/AMD control panel per game.