NVS140M drivers for Windows 8.1

[smagus]

Hi,

which drivers are u using for windows 8.1 and this card? Or another Quadro from t61p?

I tried those from Lenovo, Windows Update and Nvidia page. All seems to be a bit laggy ( for example on Win7 when I launch PotPlayer it opens the video in a second. On a Win 8.1 it takes about 5 seconds and freezing during this time)

After removing Video drivers from system it takes also a second (but play performance is horrible), so it's definately faulty driver, but I'm running out of options which one will work correctly.

Any experience in that?
thanks in advance