Shutters while shooting and seeing enemy even in CS 1.6

[Uğur Uyar]

I have 10200-H and 1650Ti and easily get 200 fps (locked) on CS 1.6 and getting around 150-170 fps on CS2 but in CS2 there is spiking while i see enemy and shoot to him. Its like for just 1 seconds but its enough to make me dead. I just surprised when it happens on cs 1.6. Not happens so much in 1.6 but still annoying with that specs. How can i find the problem? With using xperf? Or any app?

 

[ir_cow]

Try with v-sync off?