Heavy and highly irritating and annoying black crush issues. Please asus try to fix it with a software update.
We are currently tuning the display for best optimization .
For the time being make sure your phone is on the latest firmware version is .70 and please share a screenshot or video of the possible issue area.
Can you please share the below:
1. Firmware version
2. App to play video (video title where you experience this)
3. Brightness setting