I have Waydroid set up on my postmarketOS OnePlus 6T mainly so I can use the Discord app. Waydroid still needs some integration issues worked out (access to location, access to Bluetooth, access to calls/texts, ability to forward notifications to the Linux side) but otherwise it runs quite well. Performance feels pretty similar to native. I also have a OnePlus 6 running stock OS for my main phone tasks as pmOS doesn't have VoLTE support for the 6T so is kinda useless as a phone right now.