Funny coincidence because just few days ago I was using zoom for the first time long time. The image/sound quality for sure was crappy and it was lagging/spotty multiple times. On the other hand there was like 7 participants. I also don't like how you have to install separate app to use it - and I heard the OS X version had vulnerability issues.

When I'm hosting a video call I prefer google hangouts. Works OK without installing apps.