Microsoft Teams

MS Teams Weakness - personal experience only 

- It is buggy (like you didn't know)...
- It wreaks havoc on non windows systems!
- God forbid if you have multiple multimedia devices, it will not only cease to function, but also do its best to sabotage other running processes!!
- It doesn't work with multiple accounts. I'm obviously not a part of your corporate domain. That means I can only join as a guest with very limited options.
- Its synchronization makes no sense and was most likely designed by a drunk person while snorting cocaine in an effort to look like he's not drunk.
- Calling it slow is an understatement.
- In case you didn't get the above point (which you probably didn't, since you like using it), it is slow and laggy.
- It has no sense of integration (OAuth 2.0 anyone?)...
- Its layout is very difficult to use, especially when using multiple screens (I have 7 running simultaneously).
- Video filters and background effects cause multiple crashes... if you can ever get them to work in the first place, especially as a guest.