It'll never cope!
Teams can't handle a call with 4 simultaneous videos without cooking my CPU (on a fairly new i5-based Lenovo ThinkPad) and stalling and dropping out so how the hell do they think they're going to manage 49 :-O
To be fair, Zoom is also CPU intensive but it always handles a boat-load of simultaneous live videos plus screen sharing flawlessly and is reasonably pleasant to use.
It seems to me that as usual Microsoft are just copying everyone else's features, making a poor copy at that, and claiming innovation.
I use Teams because I'm forced to (Zoom client is not on the extremely limited list of permitted apps on the corporate desktop). But for team meetings and everything outside of work it's Zoom all the way unless I find something even better.
