Yah forgot to mention m playing at 1080p and Sorry about my english typo error mate, but I will post u the screen shot of my settings along with my fps .all I can say u that I have played the mission where trevor reaches los santos,(I am really busy with my work,so I dont get time to play much )till there I am getting well over 50-60 fps and sometimes 70 fps ,and my texture quality is set to max, as I said earlier my settings are set to maximum till the point where all of my vram memory is consumed,.caz I am limited by my vram memory so cant extend the settings further. one thing is that I think my post processing is turn to "low/off" I cant remember properly ,the reason was because of low vram.but definately my texture are "ultra" am sure about it.lastly I am not defending the gtx 660,but ur test benchmark amazed me especially in gta 5,as it is very low as compared to what I am getting,easily I get 50 fps.thats for sure.!but no way my fps drops below 40 ..only weird thing is my cpu runs almost at 100% and fluctuates between 80-100%...but still no stuttering or any weird issue
.I will post you my screen shot as soon as possible ,btw I have zotac gtx 660..