The first issue im having is constant 30-40% cpu usage even when no application,apps or anything is running.
I did a fresh install of 8 did updates downloaded 8.1 from windows store, all drivers up to date. For the first few days its been fine when at rest the cpu is is at 0-2% usage.
Right now the antimalware service executable is always chewing up 15% of cpu
Service Host: Local system is also chewing up 15-25% of the cpu constantly. Which includes (14) : Application helper,Application information, Backgorund intelligent transfer, IKE and Auth IP, themes etc... and so forth.
When i did a clean install all these were also present, but as i said they wern't constantly using up 30-40% of cpu.
The second issue im having is shutdown or restart, it just hangs at the shutting down or restarting screen for ages without doing anything, so the other day i decided to leave it and came back about 30 minutes later and it was still stuck on shutting down screen without actually shutting down, so now i have to manually hold down the power button to turn off the pc.