Do you see it with all videos? Could be a problem with a specific encoding parameters that some videos use.

Also, have you installed codecs from rpmfusion? You need them for hardware decoding with non-flatpak players (and browsers) since Fedora complies with US patent law and don’t have those codecs by default, and uses h264 codec from Cisco instead which sucks. What does vainfo command says (you may need to install libva-utils)?

It has much slower release cycle and ancient kernel. For people with new hardware it’s not suitable.

Easy. Christopher Judge in Mega Shark Versus Mecha Shark.