All of this just to have a less fan noise?
Maybe you can set a maximum framerate of 15 or 20fps.
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It’s not just fan noise - it’s that my computer is working over time when it doesn’t need to. I’m sure in a future release editing in wireframe or unlit will stop background calculation of indirect lighting.
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Computers are designed to work lot of hours without hurting anything.
Anyway, I wouldn’t expect that to be added to the engine. You can disable as many things as you want through the console commands, and you can create your own “editor panel” to enable or disable those settings within a clic. It’s called an Editor Widget.
Or you can quickly try what I said in my last reply.
There is also this thing called ‘the environment’… 
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Also have same question. UE always after some time even if you close all tabs except level tab, in processes in task manager unreal editor consumps wery hight load, power usage. 10-17 percents cpu (CPU ryzen 5900x, GPU 3060 12 GB, 96 GB RAM)!!!
Now it consuming, then writing that text and UE editor not active (active brouser), 17 percents cpu.
- It is normal?
- What it doing if it not active and real time renderer (realtime viewport unticed in ue 5.7.1) disabled?