When did the update ?
I'm updating now beta 5.190 :D
I's hard to say anytthing appropriate answer after one day usage... But I think yes, it's faster than nougat. And the Antutu Benchmark is shows a better score the score with Nougat is 45087 and now with the Oreo 46802.
i got this update but no change in performance ....very poor performance
some time background apps closing happens
I updated straight to the new beta directly from Nougat, and have to say performance is incredibly laggy at times... 10 seconds or more to respond to input. Don't know if it's to do with Oreo's more aggressive background/battery management. The rest of the time, performance is perfectly acceptable for this spec of phone, as it was on Nougat.