Frame rate on Android is abysmal

I tried using the android app on my Pixel 5. The frame rate is about 1 FPS…utterly unusable. But if I tap on the screen which causes the orange navigation buttons to open, the FPS is smooth as silk. The moment that menu slides away, the frame rate crashes again.

I emailed support a week ago and did not get a response. Anyone else experiencing this or know a fix?