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diop Have you tried Windows 8/8,1?
No, but this is a good point. I always disliked the new start screen but just found out that it is possible to bring back the "old" start menu from Windows 7. Good to know to have this option.
diop Are you affected by temporal dithering?
Well, I am not sure what kind of dithering it is (seems there is also spatial dithering) but I am highly affected by pixel flickering. Also DLP projectors give me strain after a while.
diop Nvidia driver settings
Please let me know if you need anything else.
I need to add that I have disabled "ClearType". Not sure if this is off by default. Turning it on makes the screen unusable again.
diop I can see these Quadro K420 cards are very affordable on the used market
Yes, I started with the Quadro NVS 295 for 4 EUR on Ebay and gave this another shot and have to say it is really worth it. Of course I cannot guarantee that yours will be the same because of revision differences. However I have hopes as @JTL had a similar experience with his Quadro K4000 ( https://ledstrain.org/d/337-nvidia-quadro-k4000 ). So it seems to me that the Kepler Quadro cards may generally be good (?).
diop It really is becoming a joke.
Yeah, I know what you mean. My wife is also already fed up with all this "buying new screens and returning them". There are still 7 or so standing around there that I need to sell or dispose. Based on the positive response from some people it is definitely worth it and to never lose hope!