The Better Fps render distance mod (1.19.1, 1.8.2) adds performance improvements to improve fps. Minecraft default renders everything within a square radius. This can be changed to a 3d circle radius via config or the video option (video options button not available for optifine). The greater the stretch, the fewer caves will be rendered below you, especially distant ones. This allows for about 10-35% fewer chunk sections to be rendered, which gives you a nice fps boost.
Better Fps Render Distance Mod – 1.19.1, 1.18.2 – Increase FPS
How to use:
This mod adds an option which allows you to stretch the circular render distance in horizontal direction, so instead of a circle you get an ellipsis. Aka: Set it higher and less far chunk parts sections lower/higher than you will be rendered. To see it visually just stand on a tall mountain/fly up and set it to the max of 10.
Visual example for render distances: