Do you guys experience this problem
in random time, vsync on, your frame rate drops below the stable one (60 or in my case 52 due to my refresh rate of monitor) . I tested many times before with the exact same demo, it will be stable, but just in unpredictable time (random) like 1 out of 10 it will become unstable until you restart computer or enough time pass, something along this line.
Sorry for my vagueness in describing the situation, but in short, it performs stable before it goes unstable with the same setup. Anyone experiences this before? How to solve this?