FORTNITE LOW FPS FIX PC

Fortnite's switch to Unreal Engine 5 brought major performance requirements. Many players who ran the game at high FPS before the UE5 update now struggle. Here's the systematic fix.

Check Your Rendering Mode First

Go to Fortnite Settings → Video and check your Rendering Mode. Switch it to Performance Mode — this disables Nanite and Lumen and can give you 50–100+ more FPS. This is always your starting point.

GPU Driver Update

After any significant Fortnite patch, check for driver updates. Use DDU in Safe Mode for a clean driver install rather than upgrading over the existing driver — this eliminates accumulated driver state that causes performance degradation.

DirectX Version Selection

Fortnite supports DirectX 11, 12, and Vulkan. DirectX 12 generally performs best on RTX 30/40 and RX 6000/7000 series GPUs. DirectX 11 may be more stable on older hardware. Test both and use whichever gives better 1% low FPS.

Fortnite Cache Clearing

Navigate to %localappdata%/FortniteGame/Saved and delete the webcache folder. In Epic Launcher, go to Settings → Fortnite → Verify. Restart and let the game rebuild its cache for potentially smoother performance.