lags and stutters in old titles

[phoenix061992]

I bought a used pc for my brother. The config of it is:
amd fx 4100 cpu
sapphire radeon vapor-x r9 270x gpu
1tb hard disk
gigabyte 78lmt-usb3 motherboard
corsair gs 600 psu
i clean installed windows 10 and updated it with all the new updates from the update centre. Then i installed games like Assassins creed II, The Amazing Spiderman and NFS Hot Pursuit. Given the config these games should run more than fine with this rig but unfortunately it doesnt. There are constant lag and stuttering in these games. Wonder what the problem is..... Please help me out.... Thank You

 

[Gingerbread]

Those are, as you said, old games. They won't run well on Windows 10. You can try running them in compatibility mode for windows 7 but that's the best you can hope for. Most likely they won't perform well.

 

[phoenix061992]

Those are, as you said, old games. They won't run well on Windows 10. You can try running them in compatibility mode for windows 7 but that's the best you can hope for. Most likely they won't perform well.

Tried changing the compatibility settings to windows 7 but still the same

 

[Gingerbread]

Try XP, those games came out when XP was still the latest OS.