Can't watch some lives... On PC !

Ok this is strange.

Most lives i watch work fine on my pc and BRAVE browser.

But many... Dont load... I get black screen but chat is active!

At the same moment the live DOES WORK on my mobile!!!

What?! Any of you encountered this? Some live work on pc... But other don't while they are fine from a phone?!

ANY ANY INPUT would be appreciated! ​