I'm at 65% TDP, so that shouldn't be an issue. I have to lower intensity to 16 to get some estability, but loosing considerable hashrate
And I've tired Awesome Miner, but i get this error just at start:
HTTP request failed: Empty reply from server
get_work failed, retry after 30 seconds
and I don't know how to solve it
what pool are you using? in Awesome Miner you will either have to add your miner line to the Advanced section under the pool or to the Advanced under the miner itself. Not sure how you did your miner line...
ETA: If you follow the youtube video he configures his miner line in there
this video could also help:
https://www.youtube.com/watch?v=ie1ipHv0SdY