I had this happen to me too with an AMD card. I tried:

• Updating the BIOS
• Updating Windows
• Updating video drivers
• Unplugging all unused USB devices
• Tried the beta gaming video drivers
• Tried the studio video drivers
• Updated the CPU/chipset driver
• Updated the SSD firmware
• Uninstalled a bunch of programs
• Reinstalled Windows from the factory recovery
• Reinstalled Windows from Microsoft’s USB tool
• Swapped my UPS for regular surge protector

Finally in frustration, i disassembed the computer completely. When i was taking it apart, I noticed something that I couldn’t see from the outside: That one of the motherboard offset screws was stripped and not fully seated. And, because this screw was next to the PCIE slot the graphics card plugged into, the motherboard was slightly warped upwards by a millimeter or two, and prevented the video card from seating fully. I replaced the stripped screw, put the computer back together, with the video card now seated snugly in the PCIE slot.

And the random stuttering was finally GONE!

Maybe you can start at the bottom of my list and work your way up to save time…