Boost fails to open .mp4 for me. When I browse "All" there usually is some mp4 content, especially from ... well ... nsfw instances. Theese almost always fail and I see just black screen. Firefox on mobile opens it without a problem and so does Sync For Lemmy. Do you have this issue or is it just me? F.e. can you open this link?
NSFW:
https://lemmynsfw.com/post/11686872
I see this:
I don't know if this is caused by instance or by Boost but as I said, Sync doesn't have this problem. And I like Boost more
I've had it happens but it usually sorts itself out eventually