v4 with cordova runs very slow compared to v3 (on iOS device)

[cbcharlie]

switching between tabs is very sluggish compared to v3 which is almost instant, built with cordova using the instructions in readme, this is on an iOS device

[cbcharlie]

ok so enabling fast click definitely fixes the sluggishness, my remaining issue is on tab 2, the entire screen scrolls and the tabs don't stay fixed, i made a screen recording demonstrating this scrolling issue... https://1drv.ms/v/s!Agp9Q4Zot2IDhsot9xHWkHJGxE-ZXQ