how to stop tekkit launcher minecraft from stuttering

Disable Dynamic Surroundings & Chunk Animator.We are working to fix as much as we can on RLCraft servers, but some changes will need to be implemented by the modpack developer for RLCraft to run 100% smoothly on any server. Note that some of the issues you encounter are related to the server performance and others are caused by clientside mods within the modpack. This will become more common as modders grow the potential of modpacks and modded Minecraft moves into newer versions. When hosting a server like this, we recommend using the best CPU options available as well as checking your chosen server hosts technical specifications.

This modpack is an example of modded Minecraft being pushed to its limits and it is likely that most server hardware (As well as home PCs) will be pushed to theirs as well. We're sharing it here for anyone playing through server hosting of any kind, to take advantage of the information and reduce their RLCraft lag as much as possible while playing. We've investigated RLCraft server hosting and found causes and potential solutions for some of the lag and common problems that our server owners have been experiencing.

How to stop tekkit launcher minecraft from stuttering