Is using lag purposefully in runs allowed? Because I had my pc under some load when i practiced some levels and noticed you get a significant speed boost if playing with lag (the World 1 does this). Isn't that unfair to people who can't create their own lag?

I personally believe if creating lag counts as a glitch, then it’s okay (even though it can also be seen as tampering with your device). It’s up to the moderators though.