I've been using HwInfo64 with the gadget on my second monitor to check CPU/GPU usage, etc whilst playing DCS World to try and work out what was causing the intermittent stuttering I was experiencing but ironically it seems it was HwInfo64 itself.
I tested by running on one monitor without the gadget loaded and still had the stuttering, so I alt-tabbed out of the game and closed HwInfo64 and after that I didn't experience any more stutters.
I can't imagine why HwInfo64 would affect the game like this but hopefully you can work out what's up as I do like to use it to monitor stuff whilst playing, or even without the gadget after playing to check max usage, temps, etc.
I tested by running on one monitor without the gadget loaded and still had the stuttering, so I alt-tabbed out of the game and closed HwInfo64 and after that I didn't experience any more stutters.
I can't imagine why HwInfo64 would affect the game like this but hopefully you can work out what's up as I do like to use it to monitor stuff whilst playing, or even without the gadget after playing to check max usage, temps, etc.