Unity 2019.3.0b7 Mac
Made a new scene, deleted the Main Camera and Directional Light.
As soon as I click play, Activity Monitor says Unity is at ~130-150% CPU and the fans start blazin’.
The profiler doesn’t suggest high CPU usage though…
Just wondering if anyone has had this issue?
(Sorry if this is in the wrong forum!)
It’s rendering at 10000 frames per second according to the second screenshot. Have you tried to turn on VSync?
Is that not 10,000 fps?
Depends on which country you are from.
Each frame takes less than 0.1ms, so there are more than 10000 of them per second.
I am… more confused now
Guys, try to help 
@wantondalliance , vsync caps your framerate to your screen’s refresh rate, so the game won’t update more often than it has to. The game view for Unity 2019 and forwards has a toggle for it in the upper right bar. You turn it off and on for builds in the quality settings.
Things to google:
VSync
If you turn off vsync, the game tries to run as fast as possible, like the 10000 fps as seen in your screenshot. Means it utilizes a lot of CPU power without having time to breathe. If you turn on vsync, the CPU has room to idle and perhaps the core(s) don’t run at 100%.
I’ve just checked and VSync isn’t on
You’re supposed to turn it on. That’s what everybody’s been saying. Pay attention.
Some countries use coma, other use full stop to indicate thousands separations. Similar applies to decimal points.
So in one country you would write 10,000 in other could be 10.000 which means 10k, or 10 000.
Depending on context, it could be confused with decimal point. For example 1.920 x 1.280. Just extreme case.
In current context fps are represented in integers. And as you may noticed OP has changed to 10 000 representation, for clarification.