I have been having this issue for a few months and still didn’t manage to solve it.
I’ve created a topic with the same title around the end of august. I got a few suggestions, but nothing worked.
I’ve tried many versions, including the alternative ones. Every time I opened the app, it would stop working and also crash down my internet connection.
The last version I tried is Release 2.1.26 · ankitects/anki · GitHub as suggested in the last reply to my topic. It is lagging like F.
it stays like this for a few good moments, before it shows me the buttons