I have all the alternatives but this is about local playback @ the NVR. My FW Build date is 2-21-2020 and it says it's the latest. Andy's is one version and month newer. While the bugs fixes doesn't mention fixing the problem here I'll try it, thanks.
Browsers are not part of the discussion here, Again, but maybe I need to re-word, Keyboard, mouse and monitored wired to the NVR4108-4K2S.
Now I did just update to the 3-19-20 firmware from Andy's link. After update and reboot checked newly recorded video recorded after the reboot, same thing, playback freezes after IVS.