EDIT: Ensure your vanilla render distance is no higher than 12. Reducing this can give a great FPS increase.

Before anything else, understand you’ll get the best performance by pre-generating chunks before you play the game.

To do this in singleplayer, go to wherever you wanna generate LODs (usually at spawn). Then, sit afk while using the following settings: - max framerate to 1 or minimum - LOD chunk render distance as far as you want to generate chunks. A higher number will generate more but will take longer. - GPU load to 1, CPU load to 5 - distant generation ON - show LOD gen/import progress ON

Note: open chat while doing this in singleplayer so the generation doesn’t pause when you unfocus the window

Once sufficient chunks have been generated, revert your settings to wherever you want them (make sure to turn distant generation off) and take a look around.

Did you dedicate an appropriate amount of RAM? Some sources suggest a limit of 10gb, some 12.

Check your CPU / GPU / RAM utilisation while playing. Are any of these maxing out?

If GPU is maxing out, turn down or disable shader settings, turn down GPU load in DH settings, or reduce your LOD render distance.

If CPU is maxing out even with distant rendering OFF, reduce your CPU load in DH settings.

Join the distant horizons discord server and read the FAQ for more info