Custom FPS Display 

You can also check Custom PING Display

Custom FPS Display allows you to see your FPS (in a rgb and custom way)

You can customize the position of the FPS display as much as you want. Just use arrows to adjust its position. (see pictures) Default key is M to toggle the configuration pannel, but customizable in key settings

Coming soon: translations and persistent position of the configuration. (translations available on 1.21)

discord support server: https://discord.gg/M6bgbzEx