Force FG through driver

Hi, this is not an issue of inspector, istead a request (if it possibile) there is a method to force fg to stay active even when reflex decide to stop it for some reason? Example, on many games in cinematics or when promp some ui like map or other things, fg stop work (it's like how is implemented by dev); in UE4/5 games is pretty simple by edit engine.ini, but on other games? this prevent games from fps drops. I know with optiscaler we can force that, but we can achive this on native implementation? Like lossless scaling, using any cap and double it. I see many others settings regard dlss fg but don't know what they doing and if they are active Any help are appreciated, thanks!