Low processor mode causes extreme screen flickering and glitching on Android

[PonasKovas]

Godot version:
3.1.1 Stable

Issue description:
When Low Processor mode is enabled, and I launch my game on Android, everything starts flickering and glitching, the game is unplayable.

[Calinou]

While this should be fixed, note that low-processor usage mode isn't meant to be used in games as stated in the ProjectSettings class documentation.

There are other issues with low-processor usage mode on Android, see #19304.

[Ramh5]

I have this problem as well, it does not seem fixed. It works flawlessly on Windows but not on mobile. I read the project settings class documentation you linked and I understand that it is not intended for mobile unfortunately. But it does not mention it in the OS documentation. It is unfortunate because I am making a strategy game with lots of idle screen time while the player is just looking at the screen and this option works perfectly on windows.

[Calinou]

@Ramh5 I'd open a pull request to change its documentation, but since the method isn't even implemented in the current master branch due to the Vulkan rewrite, the description would have to be different between the 3.2 and master branches.

[Calinou]

Duplicate of #19304.