Still high ping.
Graphic card incompatibilities will result in lower FPS, not ping. Higher ping than normal can be caused by heightened network use by your system or surroundings. Can you run a custom game and check whether it's your ping or FPS that's suffering? You're looking at heightened ping or lowered FPS for problems. If you can identify which it is, there's options to look further.
Personally, I had zero issues when I switched to Windows 10, though I disabled a fair number of things immediately after installing (and updated my GPU's drivers).
If it really is FPS, then rather than go into device manager, I recommend checking out GeForce experience and requesting it to check for updates, or (what I did): navigate to Nvidia's website and manually request the latest browser for your card. I took the liberty of saving you the effort there.
If you're on 32-bit Windows 10, this is the latest Windows 10 compatible Nvidia GeForce GTX 460M driver:
http://www.nvidia.com/download/driverResults.aspx/89126/en-us
64-bit Windows 10 uses this one:
http://www.nvidia.com/download/driverResults.aspx/89127/en-us
355.60 WHQL. You can check GeForce Experience to see if the driver numbers correspond. If they don't (your driver is a lower number!), I recommend downloading the appropriate file, installing and then going into a Custom game to see if the issue's been solved.
