Ya problem is for going REALLY fast, gan is the only cube out thats good unfortunately. Not even MSCube according to the cubicle.
Whenever I spam too hard (Tryhard) on my RS3M sometimes an edge piece pops out. Its wierd. The Antipop mechanism stops it from fully popping but it is not properly in the cube. You have to stop and lightly push it back in which can be anooying in the middle of an algorithm. (RS3M is still my main.)