Before I had around 20 Fps normal settings. Now I'm getting 36 Avg. Stuttering is also gone.

READ EVERYTHING, CAUSE EVERYTHING IS IMPORTANT :P

Tip: To remove all jagged lines, change the resolution from 1400x900 to 1650x900 in settings.xml. Just ctrl+f and edit it.

Note: I advise using K-putt's latest sweetfx because it makes the game sexier and you lose half or 1 fps ;)..it also gets rid of any slight jagged lines. This will remove all jagged lines you see in the video.

Oh and for the settings.xml, put it in C:\Users%username%\Documents\Rockstar Games\GTA V and make it read only.

Optional (not my mod/s) Use to get more fps
I advise using the remove grass mod, it helps with fps also, or if you don't want to remove grass download the lower quality grass. Lower quality will carry up fps a little, while removing will carry it up more than the lower quality grass.

Lower quality Grass: https://www.gta5-mods.com/misc/lower-resolution-grass-for-improved-performance

The remove grass mod is included in my .rar file, not sure who its made by. Comment if you know.