Hi,
About a week ago I installed a new i7 8700K in my PC along with a Corsair liquid cooler and a Gigabyte motherboard, which replaced the Ryzen 5 1500X and older Gigabyte AM4 mobo I had; about a day after I ended up reinstalling Windows 10 as well. Games overall run a lot better than they did on the old hardware, but for a handful of them I've been getting random framerate stuttering, which never happened for any of them before I upgraded. A good example is the Resident Evil 2 remake, which will normally sit around 70-80 FPS but will randomly drop to around 20 (according to Steam's FPS counter) for a second or two at a time.
Although this hasn't happened on every game I've tried, it's ranged from newer, more high demand games as mentioned above to a 2D sprite based shooter which makes it a lot harder for me to find any correlation.
For all the games I've tried, in-game graphics settings were set to default according to system specs, aside from some minor tweaking, and I'm playing them on an Acer XB271HU with Gsync on.
I've spent the last week looking through a bunch of forums and it seems like a lot of people have had the same sort of issue on a higher-end rig like this, but none of the proposed solutions I've seen have worked for me.
So far I've tried:
Reinstalling graphics drivers
Updating the BIOS
Checking on connections in the PC, swapping out some sata cables
Changing the placement of the ram (I figured this wouldn't do anything but I was desperate)
Messing with some Windows defender settings
But nothing has worked out. At this point I almost feel like I'm missing something obvious.
Here's a benchmark I did last night and attached are my CPU temps while the RE2 remake was running (cooler fans and pump were all at their highest setting):
https://www.userbenchmark.com/UserRun/14993968
(Also before I forget, since it doesn't mention it in the benchmark, my PSU is a Corsair CX600M.)