NoCollision

NoCollision is a data pack that removes collision from a few passive mobs to increase performance!
This will help both FPS and TPS, but TPS has a more recognizable difference.
To uninstall, type /reload and click the uninstall button or type /function no_collision:uninstall.
Once you have pressed uninstall, you must remove the data pack from the world folder, or else the next time the world reloads it will reset the data pack and you will have to uninstall it again.
Performance difference:
Before:

Lots of lag and stuttering
After:

Less laggy with even more noticeable difference depending on the OS!
Enjoy!