Unbelievable number of moves in seconds

I have experienced clocks going up when players are running out of time. Apparently this is NOT possible but I did not have time to do screen shots. Today one of my opponents clock was showing seconds and my opponent was still able to make 5 more moves. On review my opponent apparently had 0.4 left and managed to do 5 moves so that is less than 0.1 per move. If this person can move this quick I want to employ for data entry. I have 200GB fibre optic connection so no lagging like some have suggested before. The chess.com experience is getting less and less fun due to very little action being taken by manipulators of the game.
   

Lagging can be caused by the many miles between your fiber and the chess.com servers.

JustBeFair the problem is on Chess.com they are just are not prepared to admit it because many paid customers would leave. If someone is completing such fast moves without their clock representing the time it takes to move it is either a vulnerability in the App or a BUG ( probably both )

Sometimes it's laggy but less frequently ts an automatic bot

But honestly it's mostly server lag

Or just glitchy and neither ? It's not always some conspiracy lag like that happens on plenty of servers

When you move a piece when it's not your turn that piece automatically moves when it's your turn

From the looks of it, he was just pre-moving, which is really easy to do when your opponent is taking longer to make moves.

Your opponent premoved a few moves when low on time. He had a forced mate in two for several moves in a row, but missed it due to moving too fast. Nothing fishy in the speed: at least 0.1 seconds came off every move. Premoving uses 0.1 seconds.