I was able to fix the issues with my boards. Instead of just thermal paste I used:
Fujipoly / ModRight Ultra Extreme System Builder Thermal Pad Blister Pack - 1/2 Sheet - 200 x 150 x 0.5 - Thermal Conductivity 17.0 W/mK
I cut small squares of the thermal pad, cleaned the paste off the cooler and the chip, and applied the pad material. This made a huge difference in the cooling ability of the fans.
Just an FYI if you are having issues...
-BrimStone
Is there a diagnostic procedure for the HEX4M running on the TP-Link devices?
I have several HEX4M boards which are running around 4Gh and I was hoping there was a process for figuring out what is wrong with them.
I remounted the coolers with fresh paste and tried different settings but they still don't behave properly.