OK, there have been updates to both SetCPU as well as Temp Monitor - and now that I think about it, my issues at 1100 started right after I tried to set the refresh rate to the 1 second / 0.5 second level. Temp Monitor update even states: 2.3.2 fix stall/freeze prob & 2.3.3 fix "i" showing when MinTemp is used and SetCPU states 1.5.0a: charging hotfix. *Refresh is now more efficient, won't often ramp up the CPU to max.*
I am gonna go back to 1100 and see if I can keep her stable like I did before....