Urs Koenig (QL) wrote: > It's not the first PC with this weird QPC2 behaviour. I have seen this on > several PCs running Windows 10 but not all. Some are running (fast) as > expected. About a year ago I first reported this on qlforum (Fri Jun 05, > 2015 8:36 pm), but nobody took up the line on that.
Looks like the Windows 10 drivers are not optimized for 2D anymore. This trend has been going on for years, they only optimize for 3D performance these days. QPC2 uses the DirectDraw 3 API, which was available starting with Windows 95 and at least still works on Windows 10, albeit with reduced performance it seems. One could rewrite the screen driver for a newer API, but then who cares if the QL is 900 or 1200 times faster than the original, other than in artificial benchmarks you will hardly notice it. Marcel _______________________________________________ QL-Users Mailing List
