Why is Zoho Meeting quality so poor?

Why is Zoho Meeting quality so poor?

I've just moved from Office 365 to Zoho Workplace and have been generally really positive about the new platform -- nicely integrated, nice GUI, good and easy-to-understand control and customisation, and at a reasonable price.

However, what is going on with Meeting? I frequently use Zoom, Teams and FaceTime from my office and they are all more or less perfect -- seldom do I have issues with video, audio or sync and people look crystal clear. But Zoho Meeting is terribly by comparison. Constant video/sync issues, blurred video and lag. The person I just spoke to was on a 120/20mbps connection and I am on a slightly slower 60/10mbps connection. The other day the other person was on a major university network and I was on a 120/20mbps connection, but that made no difference. Again, with the other platforms, it's 99% perfect 99% of the time with same network connection. 

Clearly Zoho doesn't intend for it to be like this. So what is the problem and can it be fixed?