korby: To me it seems like your board is bent a little as your PWM1 and 5 are fine in temps but 2,3 and 4 are not. For me it got a bit bent when seating the CPU-cooler.
I solved this by adding support under the backplate for the CPU. For me it was best if the support was in that corner of the CPU that is closest to the LAN-port. This is on the BACKSIDE of the mobo.

I just did a quick 3DMark06-run. All on air, GFX unmodded with stock cooler: 14746p
http://service.futuremark.com/compare?3dm06=1903161
I think the performance of this motherboard is rather good.