[PrO.GameR]

I doubt you have something like MapAndreas, but there are certain plugins that use a lot of ram, and the rest depends on how many variables your script owns, my best guess is you are using something like Godfather script's MAX_STRING 256 define that pretty much devours your ram, if you script is not that huge and feature heavy I suggest you head over to these topics to optimize your script a little more
https://sampforum.blast.hk/showthread.php?tid=216730
https://sampforum.blast.hk/showthread.php?tid=580289
https://sampforum.blast.hk/showthread.php?pid=3517039#pid3517039
if you do use these optimizations in your code you will probably lower your ram and cpu usage by more than 30% (probably more than 70% if your script is old and un-optimized)