It appears the condition gets worse with the AC on. The fans run on high full time, AC on or off...
Oil is synth blend, 1 week old.
The coolant is 50/50 mix, about 2 years old.
Water pump is metal, replaced at the same time as the thermostat, about 2-2.5 years ago.
The belt was not replaced...
Gonna slap a thermostat in it, its too simple not to try.
Will report back....