yes this is known, and probably won't be allowed in most games.

Can... We know what the glitch was? Original post was deleted. Curiousity kills a cat, so I'd like to see it lol

@Snodeca clicking outside of a game window while the game is running freezes the game

That... Doesn't sound like a glitch at all and I also see no reason why it would be banned since you're literally just losing time (unless a specific glitch is discovered with it).

@Snodeca this is a very cheesy way to pause buffer a game, and games with an in-game timer will most likely ban it. A similar case is in most pico-8 games, pausing the game using the enter key is banned, because the entire game freezes. But freezing the game could also be considered a form of manipulating or modifying the game in an unintended way.

I guess that makes sense. The only game I have speedran that has such a game freeze technique doesn't ban it, so I guess my opinion is biased. Though I have never seen a speedrunner there abuse it either. Thanks for explaining though :)

Perfect Dark is a good example for this. A long time ago someone discovered that by pausing constantly every half a second they could effectively traverse and end the level with 0:00 seconds on the in-game timer. Given how annoying this strat was, they just straight up banned it.

Even if it's a bug/glitch that can be replicated with only the tools the game itself gives you, if it leads to the run becoming completely uninteresting to run I think it's pretty reasonable to restrict its use.