arkhelan

I have a minecraft server with version 1.20.1 of forge, and it has an average of 7/10 users (we are 20 in total), and I have a lot of problems when the server has to load terrain and that causes terrible lag, I know that Server problems are not due to lack of RAM since it has 80GB, I have looked for solutions to fix this and they always tell me to install specific mods to optimize the server processes a little, but I don't think that is helping me. Could any kind and charitable soul help me with my problem? Any small contribution helps