False positive - you can not take anything for granted when it comes to Android performance - it’s a sucky non-realtime OS and it will run better or worse depending on the number of services that are running in the background. Best thing to do when you get performance issues is to restart your phone/tablet, turn off wifi, turn off some services or something along that nature.
Really, the problem lies elsewhere - and this is the big problem with Android - you can’t guarantee a stable runtime performance - it’s all dependent on what you have running in the background as a user and how your OS was configured. Making an OS based on Java with ‘native code’ running in a jail was a TERRIBLE, TERRIBLE IDEA from a performance standpoint.
Another thing that will boost performance is to ‘disable’ overlays entirely. People want them ever more elaborate, so that means that system requirements will go up. After ‘adjustable scaling’ of overlays we are going to call it a day though - if people are still not satisfied by then, then they’re just going to have to learn how to make custom overlays - it isn’t hard, we tried making it as easy as possible, and if it’s still not easy enough, a user (kamui) is working on an overlay maker Android app which could hopefully fill the void.