Ask HN: Dynamic lowering “fast” graphic settings in games : Save a panda !

GTA V does it good : when ingame hardware is used at maximum capacities, when game menu open (pause / escape) hardware (GPU / CPU) consumption is 3-10 times lower and when game is alt-tabed, hardware consumption is near 0 (excepted data loaded in memory). When I run some other games (Monster Hunter World at least) Hardware consumption is always 100%(or 100% of what requires 30-60 fps).

I wonder if some kind of norms exists in game engines / best practice in video game world to make this feature more generic (I'd like to avoid killing extra polar bears when playing).

I think lowering consumption in games could be done automatically or with a manual option

Any sources / ideas / suggestions ?