How to optimize a minecraft server with forge

[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

[Sr.Victor]

First, install the spark mod and generate a log to see what mods are causing this server load

Everything must be analyzed, perhaps it is load or saturation by entities.