This is how my mta is running. Room without a single person, small map nothing else to load, fps drops from 50 to even 20. I tried with different resolutions, settings, shaders on server, nothing changed for better.
I've reinstalled GTASA & MTA twice, after that, MTA worked just fine for a day. After a day laggs are back.
Also my ram usage is 2.9/7.9
Here is my MTADiag: https://pastebin.mtasa.com/391396285