Embeddium

Embeddium is a free, open-source Minecraft client performance mod based on Sodium. It improves rendering and adds fixes for compatibility with other mods. Available for NeoForge, Forge and Fabric across Minecraft 1.16.5–1.21.4, with support varying by loader.

For your rented Minecraft server, install Embeddium with one click from the panel, keeping in mind that its rendering improvements apply to clients rather than the server.