there is alot of small reasons why stuttering/choppiness happens, i had that too and tried literally tons of solotions from google to solve it, it's releated to messing with settings in game and video card manager program, i dont have patience to list them all especially when it's easier to google and test them because no harm can come changing settings since you dont have to change any files.
Well I'm downloading drivers for nvidia now, that's what I found, instead of moving all my modded stuff over I'm going to do a fresh install of lspdfr and all my other plugins. I backed up my game already by copying the gta directory over into my other hard drive
Update ok so drivers was installed and the game is fine. So now that the game works good I downloaded Scripthook / openIV / rage / and winrar. What's the next step?