while i fully agree with your basic conclusions i really ask myself why all of you who understand what the problem of this device is (OOS) don't simply flash one of the many and 2 or 3 really bug-free and great custom roms? together with the right custom kernel one can let this devcie "REALLY" fly. My OP2 on temasek's CM13 based and benschholds kernel is way faster and even cooler than my stock vanilla google nexus 6 which does not mean the N6 is no good, it's the second best of my 7 devices but the "2" with that setup is all that one could expect once.
the result is of course not to compare with official benchmarks, especially because the fsync is disabled which means that more of the read/write process are stored in the huge physical RAM which is up to 40x faster than writing to sdcards which explains the extraordinary "UX" values. nevertheless it's real, just showcasing what's possible. further the CPUs are overclocked to 1.7 and 2.0GHz respectively but no heat.
Further i tweaked the thermal-engine.conf file to allow for full charging speed and full brightness at higher temps which does not mean that the temps are higher but the throttling of the two parameters sets in later and revers earlier
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