Hi all
it was the temperature after all . Once the room temp reaches a specific point it stops hashing and reboots as a safety fail over.
Took me a while to figure as innosilicon doesnt mention it somewhere.
As for the voltage/freq i dont have access to them with innosilicon.
So, Am I right it is temp protection that keeps the miner hashrate fluctuate I just noticed the temp under the miner status and the time where your hashrate drop around 3 pm to 5 pm after that it becomes stable. If this is always happening daily in the same timeframe possible it is a temp issue.
I don't know how innosilicon works but can you check the settings on the left then click the performance. Under performance you can see the 4 tuning choices (efficiency, Balanced, Factory and Performance) slide it to the left and try to run the miner in "Balanced mode" as suggested above.
Let's see if you still get this hash drop.