I have an ASUS X470-PRIME PRO motherboard and CORSAIR RGB HARPOON USB mouse. I've noticed at times (rarely randomly, but often with certain CPU stress tests) the cursor will get visibly laggy. It's hard to reproduce this outside of the following test, as it doesn't seem like prime95, CPU-Z's, nor OCCT's stress tests cause this, and it doesn't entirely seem like just a 100% CPU usage issue. I've owned Skylake, Kaby Lake, and Coffee Lake computers with this same mouse, and don't recall ever seeing my cursor ever be an issue. I know Ryzen is known for USB issues (still run into them today with VR), which has me thinking this is a Ryzen-specific issue, but interestingly even running the mouse through a different USB controller on a PCI-E card still can reproduce this stutter. This seemingly affects all of winsat's cpu tests (encryption, encryption2, compression, compression2). The easiest way I can reproduce this is on Windows by using the CPU encryption winsat test (command prompt): Code: winsat cpu -encryption Can anyone else reproduce cursor stutter/lag while that test is running? Does anyone have any idea if this can be fixed?