If possible, please have no IP leaks when using a VPN. Since on Mumble, those not using a VPN can get DDos and have their internet taken down by someone they met on Mumble. Not sure if this is a security threat on Matrix or for Matrix clients in general but this is something to keep in mind for messaging, audio chats and videos chats for a gaming client since there are gaming chat apps like Mumble were this is a common occurrence.
I don't know if this is a problem for Matrix clients or WebRTC (for calls) either, but I will definitely keep this in mind! I use a VPN more or less always, so I'd run into it too.
If possible, please have no IP leaks when using a VPN. Since on Mumble, those not using a VPN can get DDos and have their internet taken down by someone they met on Mumble. Not sure if this is a security threat on Matrix or for Matrix clients in general but this is something to keep in mind for messaging, audio chats and videos chats for a gaming client since there are gaming chat apps like Mumble were this is a common occurrence.