UPDATE: I have managed to hack fix this;
I have a feeling it's the Power Management mode which was at
Optimum, I set it back to max performance.
I also changed the max FPS but I don't think that was it, the same issue happens with USB and performance audio, if the settings get messed up, you get crackling, here we get clamped frame rate.
I have run the debugger multiple times and I finally get 60 FPS back on Windows 10.