Has anyone seen this before? I got killed by someone and their movement speed was very fast, so I spectate then the rest of the match. They were switching between their secondary and sidearm but performing a cancel function. When done their movement speed went crazy and they weren't holding anything in their hand, but we're still able to shoot.

This low life also teams in Solos, so I wouldn't put it past them if they were running some illegal hardware. (Proof in reply, I don't call people out without it)