12% CPU is often a single core maxed out on an eight core CPU. Could be a single threading limitation ...I just can't get the issue i updated the bios update gpu/cpu, Even reinstalled windows a few times to see if it fixes the issues but not help, It could be thermal throttling but since im not some genius i thought maybe somebody could fix my issue.
Im using a laptop, But yeah it was thermal throttling. i've found the issue, thanks for trying though!full system spec? include brand and model of the psu?
cpu temp?