My task manager is showing ntoskrnl using high memory, curious if this is normal if I need to stop it or fix it somehow.

Please run a system file check (SFC) & DISM (if necessary) if you are on win 8 or higher
All instructions are in our Wiki article below...
Should you have any questions please ask us.

System file check (SFC) Scan and Repair System Files

If the above does not work

In order to diagnose your problem we need to run Windows performance toolkit the instructions for which can be found in this wiki
If you have any questions feel free to ask
Please run the trace when you are experiencing the problem