Game speed gamerule

There’s random tick speed and there’s Day/Night cycle commands.. but what if there is a combination of both?

The game speed is a game rule that speeds up the whole game, from soundtracks to rain particle movement speed to everything. The value to put in the command is by % (i.e. setting the gamespeed to 0.5 makes the game 50% slower, etc..), the range is from literal 0% to 1000% (10x the normal speed); And there are fractions, so you can set a value of 1.38310736 for example.