you have hardware decode support but I wonder if its being used.
I found this info from 2017 so may no longer be valid but "
Browser Video: Codecs, Formats & Hardware Acceleration
MP4 containers with H.265 video (HEVC), on the other hand, are only supported in Edge and Internet Explorer, and only on devices that can decode H.265 in hardware. The reason is simple: Edge and IE do not decode H.265 by themselves, so Microsoft does not have to pay licensing fees. Edge/IE pass the video stream for decoding to the OS which in turn sends it to the GPU. Licensing costs are paid by the GPU vendor."
Im curious how liveview behaves in internet explorer or edge.