just posting this, to provide info.
downloaded windows drivers for amd, and switched to amd balanced power settings.
went to bios and turned xmp off. (went to stock ram speed)
did the same render and ended about 9:00 mins. (reference time is 8:40 mins)
notcied that case fans were not taking the heat source as cpu on bios, those temps above were when case fans were running at lowest speed. so changed the source to cpu, Fans go faster when cpu is under load now.
temps were worse, hitting 84 for a few secs and average of 81c
as I watched these the whole time, ppt did not infact stay at 100% all the time, only when stress was stronger and when it is lighter it moved down to %90. edc was again 100% the whole time.
so I went back to bios and while looking at things I found an eco mode (85w) . turned xmp back on (3200mhz ram), chose the eco mode
restarted the render. ended in 8:43mins. 3 seconds more, max clock rate hit 4.01 instead of 4.12
max temps were 75 degs with an average of 71c
ppt stayed almost at 100% all the time, only went down for a few times. edc was again 100% the whole time.
I am going to look more into EDC later.
this is a much cooler and safer state for almost no performance loss.