Rather than making things run more smoothly, my phone has felt very, very sluggish since updating to the Oreo beta. Start-up time isn't noticeably quicker either. Anyone else?
Sure, I was just wanted to know what other people's experiences were :)
My experience is the same. Much more laggy than Nougat was, generally.
Trying to use "Ok Google" seems like a particular pain point. Takes 30 seconds or more sometimes before it unwinds itself enough to listen to anything else I say, and even then it sometimes just doesn't bother. And the animating microphone/dots run at about 0.5fps while it's thinking about it.
The secret for me at the moment seems to be "Avoid Android Auto". If I use that, it doesn't start up properly (which I think is a known bug in Oreo generally), and even when I kill it my phone is pretty much unusable until I reboot it. If I don't go anywhere near Android Auto, things are generally working acceptably well.