Vsync locks League to 30 fps

my pc is far from too bad to run league on 60 fps, being able to run even witcher 3 on ultra settings and 60 fps. and without V-Sync on, i get 150-200+fps (according to league anyways) but whenever i have vsync on, it stays around 25-30 fps, which is really annoying, i have also checked that my screen runs on 60hz so it doesn't have anything to do with my refresh rate, i noticed this happening ever since patch 5.12 before that it ran at 60 all the time, so is there any fix to this? because going to 30 fps after being used to 60 is a change that gets annoying fast.