Thank you for your reply! I added:
--temp-overheat 85,85,85 --temp-cutoff 93,93,93
Is it ok?
Edit: nothing happenes when one of cards reaches 86-88 degrees.
Check the Process Log window - it shows the arguments passed to bfgminer. Can you copy & paste those here? Note that they will include worker passwords you may want to clean up first.