Half-breed, still living despite WotC racism
Well...This is pretty much why I dont like high level play. You need to account for this kind of thing constantly.
Over on YouTube 'Rule Lawyer' is always claiming PF2E works great up to and through level 20. He's done at least one combat demo of it that seemed to work.
I'll soon be testing this out for myself. The new Stolen Fate adventure path goes from level 11-20 so it's a chance to see PF2E at high level in a very recent module (some older AP, if I recall right, also went to 20.).
Everything in the game looks like it will hold up just fine. Though after a certain point it would have the 'Champions problem' in a lighter form - too many dice being rolled per action. But we're doing it in Foundry so that will be a non-concern.