I agree. The only real problem I have with the new UI is that it is slow. However it is so painfully show, even on a fast device that it dwarfs and of the minor benefits of the new UI for me.

I end up using the new UI for mobile, because the old UI is basically unusable. Luckily I generally only open one tab on mobile and the old UI on desktop.

If the new UI was fast I would actually consider it good.