Window throttled if not partially visible on the desktop

[itjustwerks]

I'm noticing that if the window I'm trying to keep active is completely behind another window, it continues to be throttled. As soon as just a tiny fraction of the background window becomes visible, it begins to function normally again. Is there any way to get a fully backgrounded window to behave as though it's active and visible?

[brian-girko]

Have you tried FAQ7?
https://webextension.org/listing/always-active.html?rev