Opencore 0.6.2 success with Big Sur but it always boots with black screen

Hi all, my Opencore 0.6.2 Big Sur beta 10 boots all the time but its always starts with black screen.

I know it because when I press the keyboard, there are sound made for typing (even VoiceOver works CMD+F5, see video below)

When I start frustrating and spam typing, the screen glitches and woolaa the screen shows up. But sometimes it can be really hard to "trigger the glitches" and will continue to stuck at black screen or blank screen after boot. (It happens on every boot TT)

Boot in black screen

submitted by /u/StarG4zerZ
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