Firstly an absolute “must read” from the guys Dan Allen and Nick Rintalan around the area of codecs and bandwidth.
Particularly for folk migrating from Win 7 to 8 or later couple of items piqued my interest (slide 25).
i) Desktop Windows Manager (DWM) can no longer be turned off
ii) GDI/GDI+ was deprecated
On previous iterations of OS hadn’t placed a large emphasis on codec testing (fewer options/scenarios for one) but in the new environments with all the options that comes with it essential the right “mix” is found based on your application set