GoldenHelmet has noted an amplification in this and similar bugs in MCPE-45922 MCPE-60210 MCPE-58605 MCPE-60497
Duplicate of MCPE-44815 , sorry.
This bug seems similar to the issue in Java edition, MC-104631
I can confirm this in the latest 1.14.30 on the windows 10 uwp version and iOS, going to upload a video from both.
This should no longer be an issue in the latest. Tested with pack mentioned above and bdcraft.
I am experiencing this in v1.14.20 on Windows 10 (UWP).
Can confirm this is still an issue with the latest NVIDIA drivers and latest bedrock patch (201). Uploaded my dxdiag, but since I'm lucky to have intel integrated alongside nvidia on my device I'll just switch to it in the meantime.