Nonsense with high CPU / GPU usage

Omniverse Isaac Sim
10

window → script editor
run

import carb
carb.settings.get_settings().set("/app/show_developer_preference_section", True)

edit->preferences ->developer

you can set various settings to throttle and limit fps when in focus/out of focus

if you want to permanently change settings you can open
apps/omni.isaac.sim.base.kit
and edit these three lines

[settings.app.renderer]
skipWhileMinimized = false
sleepMsOnFocus = 0
sleepMsOutOfFocus = 0

by default Isaac Sim runs as fast as possible and doesn’t throttle