Looks like a MoYu Weilong stickerless cube. I think it can handle that speed without modifications.
Any 'legal' rotation is pretty easy on the insides, mechanically. You can adjust the tension and add some lube. It doesn't seem to do any corner-cutting in the slo-mo part of the video.
Any 'legal' rotation is pretty easy on the insides, mechanically. You can adjust the tension and add some lube. It doesn't seem to do any corner-cutting in the slo-mo part of the video.