Use desktop application.
BTW, the scrolling issue exists in the release. It is not in native apps but third-party apps. The refresh rate drops to 60 once you remove your finger from the screen.
I had downgraded two days ago to be able to use GPay. It shouldn't make any difference. If there is a newer version, it should just show up. It didn't show up at the beginning but after a while, I restarted the Smart Switch and it showed up right away.