No way to downgrade to 2019?

I made the mistake of updating to 2021 thinking it would remove the issues I was having with 2020 (slow scroll in/out, slow response time for brush size increase/decrease etc...). However, 2021 was even worse. And to forestall question, I'm running a geforce 750 ti with up-to-date drivers in an i7 win 10 rig and it ran 2019 like liquid gold.

I looked to downgrade to 2019 but I notice it's no longer a revert option on the cloud software. Any chance of this making it back on the 'older versions' page? Anybody have a workaround?