Make sure you have the proper drivers for your monitor installed, usually a .INF file. What might be happening is that the games are selecting a 30hz resolution. Also, verify that you did not select the resolution with a 30hz refresh in the game you are concerned with.
and I found my problem is that drivers amd crimson downclocking cause my graphics so it stays at 30fps with vsync, but still I found no solution to my problem.
my chart suffers downclocking
i need solution problem downclocking