This sounds like normal behavior/settings for laptops, especially gaming laptops. If you change this setting your battery will not last more than an hour, unless it's a big battery or if you're conservative with your graphic settings.
Lenovo should have a built in software that allows power control or performance mode. Search for that. Otherwise, you can manually change it through the Control Panel --> Power Options or thru NVidia Control Panel.
I can't give you step-by-step directions because I use a desktop not a laptop. My gaming laptop is stashed away somewhere.
For NVidia Control Panel, it should be under Manage 3D Settings, the global settings tab, then look for power management. Make sure it's on maximum performance or something like that.
You can also ensure that the game you're playing always uses your dedicated GPU thru the second tab, program settings tab. Find the game under #1 and then under #2, look for power management.
This post was edited by Xet on May 19 2021 07:28pm