Even after uninstalling GE and rebooting, I ended up topping out on repeated runs at 1988
@NordernAttached, screenshots from MSI CC - replicated the same settings in bios to make it permanent.
For a cooler, I'm using the Master Liquid ML360R RGB.
Also, tried a Prime95 run with these settings and cooler - ended up hitting 80C at around 7 minutes and cut the test short there. I'm planning to drop it back down to 4.325 and see if I can get an hour, or lower until I can get at least an hour.