I have documented a few glitches in Windows 8.1 and wanted to see what others might have found. For diagnosis the glitch was testing in a basic install with the 8.1 update, a clean install with 8.1 being installed before any other software and then in a Windows 8.0 install fully updated.
1) YouTube Video flicker: I have found a number of YouTube videos that have a white flicker around their edges, much more pronounced when full screened. This issue BTW is not seen when using Chrome.
2) Mediaplayer video flicker: As with the YouTube flicker I have found a number of my videos will have a white flicker to them when viewed in Mediaplayer or the Windows 8 movie player. This issue disappears when use VLC player in Windows 8.1
3) Vengeance 2000/1500 Sound Issues: With Windows 8.1 these headsets will not make use of their Dolby sound options nor does anything but 2.0 sound work.
4) Company of Heroes 2 Compatibility Mode: This issue is not just in 8.1 and has been seen in even Windows 7. However the fixes that work in other OS does not work in 8.1.
I have been able to successful reproduce the above in every install of Windows 8.1 and they vanish in straight Windows 8.
Seems 8.1 has some under the hood changes ....