If im right, you are telling about player x-speed change, while playing long levels? If so, that's impossible to fix right now, cuz that's the bug in the game/code itself. The cause of this is unconsistency in sum of numbers. Example: 1+1=2 is wrong, but 1+1=2.0000000001612 is right, and by progressing in the level further, it's unconsistency grows bigger and bigger. If you wan't to know more about this, just search this "GEOMETRY DASH MECHANICS 1/2" it has english subtitles, so don't worry

If im right, you are telling about player x-speed change, while playing long levels? If so, that's impossible to fix right now, cuz that's the bug in the game/code itself. The cause of this is unconsistency in sum of numbers. Example: 1+1=2 is wrong, but 1+1=2.0000000001612 is right, and by progressing in the level further, it's unconsistency grows bigger and bigger. If you wan't to know more about this, just watch this video "GEOMETRY DASH MECHANICS 1/2" it's in russian, but has english subtitles, so no worries