I would HIGHLY recommend people not to install this beta... Rebooted my phone and the problems are still there. Let’s hope it improves as time goes by but the phone has become very unresponsive when opening apps or launching the multitask tabs. Even swiping down on Control Centre is very slow.
My X was unresponsive after first boot following the install, came back after 1 min, big lag when opening app like facebook, but now it's back to normal everything is working fine.