New
#11
You haven't said much about what your in game graphic settings are at. I don't know about the other games mentioned but GTA V has a huge selection of graphic details and one of those may be causing your occasional stuttering. A GTX 1060 6GB is a good GPU but it isn't designed to handle maxed settings perfectly. If it was Nvidia wouldn't be pleased re their 1070, 1080, 1080 TI sales.
I'm having a hard time understanding how your friends with lesser hardware aren't experiencing the occasional stutter you do. Are they using the EXACT same graphic settings and monitor resolution? I'd be testing with one monitor only, latest Nvidia drivers with a clean install and V Sync off. I'd run Geforce Experience and go with Nvidia's recommended settings for your hardware and GTA V. Look at all the different settings and what Nvidia is recommending for my hardware:
If there is stuttering with the GFE recommended settings I would lower them to say medium to see if the stuttering goes away. If the stuttering goes away based on say medium then you can up the settings to where you were and start reducing them one by one to see which feature is causing the issue.
Do you have Afterburner/RTSS installed? Sometimes looking at the OSD detail when the stutter occurs can give you a clue of what is happening. I just ran this video, driving, crashing around in GTA V.
I didn't experience any stuttering but the cause of an occasional in game stutter is hard to isolate. As Nvidia keeps updating new drivers for new game releases, sometimes older games suffer. But I would be looking to see if changing certain in game graphic settings eliminates the stutter.