Had a really bad experience with a one to one video call with my Mum again today (around 14:45 UK time) 
I could see and hear her fine, but my audio kept cracking up. And the she stared hearing echoes of herself all the time too.
I checked my ping times and they were worse than normal. I normally get about 100 whereas this time they were consistently higher, sometimes even going over 1000:
I’m not sure why though, because I did a speed check on https://speedof.me/ at the same time and it seems our speeds were good. I forgot to save them but I was about 25mb down and 8mb up, although I think ping latency was about 70.
We had bad weather so perhaps that was effecting it somehow?
Or maybe others were having meetings at the same time and that impacted it somehow?
/me shrugs.
I’m really looking forward to it “just working” at some point in the (hopefully near) future.