Looks like the board is overheating.
These boards run over 110c, I would not call 82c anywhere close to overheating nor is it anywhere near the shutoff temp built into the firmware.
When you say "These boards..." are you talking about the board temperature being 110 degrees, or the chip temperatures?
Awesome miner shows , one unit for example, running at 70 deg C, but the chips are running 83/72/78.
Is it okay for these chip temperatures to be in the 80's? Do lower temps increase unit life?
Doesnt the firmware have a 90 degree unit shutdown?
100c is when things like FETs start to short and cut through. Likewise I would not run chips at higher than 80c normally, I prefer to run things at 70 or less. The higher the temerature, the more unstable the chips will be in terms of current draw and the more likely a brief airflow fluctuation would burn them out.
Your mileage may vary of course, but this is my opinion.