I’ve tried Tinychat for group video chats, and it works fairly well for casual use. It’s easy enough to set up and join rooms, but the interface feels a bit outdated compared to newer platforms. Performance can be hit or miss - if your connection is good, it usually runs fine, but lag and audio/video issues do happen sometimes.
One thing to keep in mind is that moderation tools are pretty basic, so public rooms can sometimes have spam, trolls, or sketchy users. As for activity, there are still active groups, but it depends a lot on the topic - some rooms are busy, while others feel dead.
My advice: it’s decent for casual group chats if you keep your expectations realistic, but if you want a smoother and more polished experience, platforms like Discord or Zoom may feel better.