(relaunch x3) Simply put, input lag appears to be much much worse in this new beta. Try swinging your view around with a mouse and you will see that your input is delayed even more than it was before this beta. Please do fix this issue in the next beta so Windows 10 getting Render Dragon won't cause issues.
Linked issues
Comments 2
we don't have any responses from the developers regarding fixing this bug
we are all looking forward to receiving an update that will fix this bug!!
it lasts since the 1.16.200!! Some players have had their game refunded because of this lag!
our games are unplayable since this update, how much longer are you going to keep us waiting??
Please stop duplicating your own reports (MCPE-112149).