second thing that can be easily fixed - auto-tuning is quite slow and it is running after gpu temp reaching its limit. every time!
there is no need for this. just use gt values found during startup.
It is deliberately "slow" (it takes 3-5 minutes on average) in order to get repeatable and reliable results. If the auto-tuning is significantly faster, we will be taking less measurements and as a result the "best" GT found may not be optimal. To avoid the problem you are running into, you can run auto-tune again after the temperatures has stabilized. In order to do that, you need to press the 'z' in the miner console window.
no, i am not complaining about its slowness.
the problem is that if gt is not set, auto-tune runs every time gpu starts mining after reaching temp limit.
so, instead of start running at 33MH with already found gt value, gpu starts at 26MH and when it reaches 33 after few minutes, it can reach temp limit again and stop mining.
yes, that is not normal in long term usage, but when it is too hot you have no so many choices.
btw, what do think about starting auto-tuning not from 0 but from user-defined value?
so if most of gpus have the same +/- 1 gt value, you can set, for example, -gt 15, and auto-tuning will try higher and lower values for best performance, and it will take much less time to complete.