Tailscale with Mullvad leaks your DNS
Users report that connecting Tailscale to Mullvad exit nodes causes DNS requests to leak through their ISP instead of the VPN. While developers suggest the issue is transient and will resolve as sockets recycle, many users experience persistent leaks across Windows, Android, and macOS. Workarounds involving browser settings or disabling DNS overrides exist but often compromise functionality or speed.
If it takes more than 2-3 mins IMO it is too long because the user expects the level of privacy afforded by a VPN as soon as he clicks the button.