Alright, well my pool hash rate got better now, close to about 60% of actual hash rate.
I have further problem which is my actual hash rate, i am can run 600khahs and max intensity 15. If i get intensity 20 on both GPUs computer freezes.
Also very wierd it is if i use settings that are suppose to be best for r9 290x (--thread-concurrency 32784 -i 20 -w 512) i get only 80Khahs??? I have AMD catalyst 13.11 beta 9, should i get never drivers even that those are reported to be the best for r9 290x?
Dunno if it will help, but these are some epic configs:
http://rumorscity.com/2013/12/03/litecoin-gpu-mining-with-amd-r9-290-and-r9-290x-sweet-spot-for-1000khashsec/Justin Soo who wrote the article are awesome - I used to guide to undervolt my MSI R9 280X, Justin is pretty helpful if you post on the page.
Highly recommended.