Both pools have notoriously bad predictions of estimated mining power. I mine at 220 kh/s and it displays me at 50- 150 kh/s.
You should not trust them below 500kh/s.

I do get the expected amount of coins based on ltc and ftc calculators.
How far are you of of the estimate by the calculators?

Some points:
- Update video/open cl driver
- What are the PSU line variations
- PSU health?
- Revert to cgminer 3.1.1, most stable for me.
- What is the cpu load? Not cpu mining as well right? Try it without cpu loading.

What are the hardware errors btw?