Note to be cruel, but try reading the thread... its all been stated and restated.
Eh, skipped that last page. Most were not specific on timeframe for speed loss or which firmware used anyway. The gist being that fractional yet cumulative hash rate is lost over time, more on some machines than others, automated reboot is only fix for now.
Let me rephrase - anyone have more specific data to share on this phenomenon?
I also noticed that the hash loss was different on each board in the machines affected with some being down more than the other two...and seemed to be consistent over time. One machine had a single board that was responsible for almost 100% of the loss. No unusual HW errors or rejects reported.
Anyone still under warranty taking this up with Bitmain support? (almost choked typing that)