OfficerKnox

For whatever reason, it was "keepcalm". I painstakingly had to go through ALL my scripting mods ( I'm running like 20+), and I double triple quadruple checked, and I can say without a doubt that is was the cause. 
I know keepcalm isn't a complicated script, but like I said, for whatever reason, uninstalling it fixed my lag.
Of course this sucks huge ones, because "keepcalm'' is pretty important in Los Santos! lol