Distant Horizons Low FPS Fix: Reduce Stutter and CPU Load
Distant Horizons can extend the visible world without rendering every distant chunk at full detail, but LOD generation and shader rendering still use CPU, GPU, memory, and disk bandwidth. The fastest fix is to lower vanilla render distance first, then tune DH generation load.
Quick answer
Start with 8–12 vanilla chunks and a conservative 64–128 chunk LOD distance. If stutter happens while new terrain is building, reduce builder load before increasing RAM or render distance.
Common symptoms
- FPS drops while flying or exploring
- CPU stays near 100%
- stutter continues after installing DH
- shaders make the problem much worse
Step-by-step fix
Lower vanilla render distance
Start at 8–12 chunks. Let DH render the far terrain instead of asking Minecraft to render full-detail chunks at the same distance.
Identify generation load
Compare an already-generated area with unexplored terrain. High CPU use that settles after LOD building is different from constant stutter in an area whose LODs are already complete.
Reduce DH building threads
Use no more than roughly half your logical CPU threads as an initial ceiling for LOD building. Reduce the value further if mouse input or the game thread stalls while exploring.
Use a conservative LOD profile
Start with 128–256 chunks, medium or low quality, and cave rendering disabled. Increase one setting at a time after generation stabilizes.
Test without shaders
Disable shaders temporarily. If performance returns, use a shader with documented DH support and enable its DH integration option.
Wait for initial generation
CPU usage and stutter are usually highest while new LODs are generated. Re-test after the area around your base has finished generating.
Sources and verification scope
Reviewed by the DistantHorizonsGuide Editorial Team against the public release listing and project distribution page. These instructions are conservative troubleshooting steps, not a guarantee for every modpack. Exact menu names and compatibility can change by Minecraft, loader, and DH build.
Still stuck?
Record your Minecraft version, DH version, loader, shader pack, GPU, and crash log before asking the community. That information makes compatibility problems much easier to diagnose.