Vsync introduces stutter

Hello. Why do I get microstutter when using Vsync (either in game or with NCP)? Ive got at 144hz Gsync compatible screen (LG 27GL83a). When having no Vsync on at all, things are very fluid, but I dont need more than 50% of my 144hz, but since I get stutter, I cant use it.

Any ideas why this is occouring?

If you turn on the in sim vsync you should turn off all other enhanced sync features such as freesync, g-sync, and I think both the MD Adrenalin sw and the Nvidia control panel have additional forms of vsync.

Edit: here is a good article that explains vsync: