Hello, and thx for you response Maru,
I took the time to do few tests to show you guys what a come up with,
I did 3 renders as show on the pic,
1 - Physical render from C4d
2- Corona - Low power off
3- Corona - Low power On
With these results we can assure that Thermal is not the issue here, I had 0 problems with physical stock render on c4d. But when we start using corona you can see the graphs all messy when low power mode is off and it gets a little better when it's on. Usually after pass 5 is when the speed start to drop. Even with higher temps on Physical it kept stable all the way towards the end.
I have zero knowledge on programing but the results sure show us something is off on how corona is using the cores, it uses the Efficiency cores at full blast and the performance cores are all messy.
I Also did record the screen and you can see the difference with low power on and off.
I'll try to do test you asked for to see the differences.
Machine:
Macbook pro 16" - M1 Pro
16gb ram
Cinema 4D 2023.1.3
Ventura 13.1
Corona 9 HotFix 1 ( also tried the latest 10v)
https://drive.google.com/file/d/1KRWFQA4Rtx7yxAr9ahYu2glyfxXuaH0k/view?usp=sharing