L@bug
Clients
Hacked clients, PVP clients, optimization clients, etc. are problematic for multiple reasons, particularly when it comes to mod compatibility. You may run into issues like rendering glitches or crashes due to their built-in modifications to Minecraft. They are unsupported by Iris and are not recommended. Instead, we recommend using a launcher that does not modify Minecraft itself, such as Prism Launcher, Modrinth App, or even the vanilla launcher from Mojang. You can find a list comparing trusted launchers at https://mc-launcher.tayou.org.
Tag requested by slooshie
SLabyMod in particular is infamous for causing issues