I have to admit i have been playing Fallout NV a lot more than Fallout 3. This was mainly because Fallout 3 has been known for it's launch problem issues. The Steam version certainly gave me a headache in the past to get it running and would still cause problems even after 'fixing it'. I hesitated a bit to purchase the GOG version, since there still seem to be people having issues to launch (which are fixable i think). But so far for me there have been no issues at all playing it on windows 10. I only get a warning in the beginning that it may not work correctly, but after pressing continue i can just go boot it up and explore the wasteland. No crashes or stuttering after roughly playing for 9 hours so far.