It’s been really solid for me since that major overhaul they did a couple of years back.
Not sure what issues you have, but I wonder if perhaps that us NOT running 3rd party security products is a factor (we only run Windows Defender).
We have 5-6 different "endpoint protection" and security related pieces of software running on our machines at all times. We also have enterprise SSO via SAML2 which is constantly logging us out, saying we aren't logged in, re-prompting over and over to enrol the machine into some management policy which then hangs the program if you click yes, and makes you re-authenticate (eg redo login and MFA) if you click no.
It frequently just hangs when you click join on a call. Sometimes when you are talking it stops responding but other people can still hear and see you, which is annoying because if you un-mute or take over the screen in a large company meeting, but then get stuck with mic on or presenting, everyone can awkwardly keep watching you while you can't stop doing either of those for 45-60 seconds.
Many of these problems are probably just due to the machines being hampered by huge amounts of instrumentation/monitoring/interception, but teams is much worse than other electron apps. For example, Slack and vscode do not exhibit these problems on the same machine.