Android Q working flawlessly here on my Mi 9, I flashed using TWRP by LR.Team;
Format device > Reboot to recovery > Flashed 9.8.8 > Flashed Magisk > Wipe Dalvik Cache.
Everything works fine; audio, calls, cameras, etc. Fingerprint works fine and even a little bit faster, I personally haven't encountered any bug. The system feels buttery smooth and snappier than before.
Every Magisk module that I used before still works, including audio mods such like Viper4Android and ICESound, the one that didn't work at all was Dolby DP so RIP.
Battery life feels better than the last week, used some social media apps, some music, some reboots to test Magisk modules, etc. even with those audio mods in the background I could get 5h 9m of SoT with 9% left.
So far so good, thanks to the entire .eu team for doing a great job as always!