I just found out the minimum effective flip queue size in Windows 7 is 1, and setting 0 will just put the value back to default. Can anyone confirm whether Windows 8 or 8.1 behave the same? Is it true that flip queue size is no longer changeable since Catalyst 13.3? Is it true that the FQS value doesn't affect Directx11 games? Finally, does the value affect OpenGL games, and if so is there a similar minimum value of 1 for them in Windows 7 (and above)?