Hey guys, I am playing Mafia 2 on Windows 8.1 Pro x64 . The problem is after a minute , it freezes for a second and then resumes the gameplay. It is running smooth BUT it freezes a second and then resumes normal gameplay. It is happening continuously after some time. Same thing happened with Bioshock 1 when I played it . My Rig is Core i7 4771 , 16 GB DDR3 RAM, Asus GTX 760 DirectII OC , Win 8.1 Pro x64. Is it happening because I am playing older games on Windows 8.1 ? Or is it happening because of something else ? What could it be and how to solve it ? I have many games I wanna play. Kindly help.