I recently purchased an EVGA GTX950 SC+ to replace a defective GTX570, however when running certain games, in particular GTA V, the famerates are actually worse than with the GTX570 although the graphics settings are the same. Also in GTA V it appears that the textures are not loading correctly.
I have cleaned out the drivers and re-installed but it is still the same, even when I reduce the in-game graphics setting.
The motherboard is a Gigabyte G41M Combo and the power supply is a Corsair HX620W.
Any advice on what the problem could be would be greatly appreciated.