Too Fast removes Minecraft’s server-side player speed limits that cause “player XYZ moved too fast” console messages and rubber-banding. It only needs to be installed on the server. Available for Forge, Fabric and NeoForge, it supports Minecraft 1.16.4–26.1. It conflicts with Random Patches, so do not install it alongside that mod.
Rent your own Minecraft server and install Too Fast with one click from the panel to remove those movement limits.