I get about a 10-15% boost on my system. Impacts both the CPU and the GPU. It could create a larger benefit for lower end systems.
Built to be lightweight and uses optimized functions. When Sodium is installed, Better Render Distance hooks into Sodium’s own occlusion culler to keep overhead as low as possible.
This mod makes three optimizations to improve upon this.
Changes the render distance formula to be as a perfect circle as it can be which reduces the overextended diagonals.

Upgrades the shape from a cylinder to a sphere. Which extends the diagonal culling from only being done horizontally to vertically as well.
Ships with vertical distance set to the Balanced preset by default. Useful especially at higher render distances.
Available in Sodium’s Video Settings. You can toggle the optimizations on/off and adjust the vertical culling amount.

Auto Vertical Scale setting that includes three presets (Performance / Balanced / Quality) which automatically adjust Vertical Scale based on your current Render Distance.
The manual adjustment slider is disabled when the Auto setting is enabled.
Compatible with all the popular performance mods. If you find an incompatibility please report it and I will check it out.
I will be updating this mod to every stable Minecraft release. I have additional optimization ideas planned, but they’ll be explored and added over time.
I am also looking into porting back to popular older versions of Minecraft. Check back later if a version you are looking for isn't currently supported.
You can join the Discord server to report bugs, request features, ask questions, or reach out to me for any purpose.