Just to confirm, have you tried a clean reinstall instead of the regular one? We recommend this step as it'll remove the old drivers first and then install the new ones. This tends to solve issues with the app's performance. Give your device a quick restart as well before you open the newly installed app.
If this doesn't do the trick, let us know and we'll provide you with further steps.
Hope this helps. We'll look out for your reply!
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