I wouldn’t say Matrix needs 1:1 feature parity with Discord in order to be a viable alternative for a lot of users.

My social circle doesn’t typically use the entire suite of features in Discord. Text chat, voice chat, video calling, file sharing, and screen sharing cover our usual needs.

You could try opening up the Resource Monitor and checking out the Network tab:

It might have the same issue (grouping everything under the VPN .exe), but it’s worth a shot.