Yesterday when I tried to play KF1 with a friend my FPS dropped to near nothing and then the game crashed. I recommended deleting the .ini file so I did but then I got a black screen. I then ran through every fix from this location http://steamcommunity.com/sharedfiles/filedetails/?id=125107851 and tried everything from driver updates and rollbacks to uninstalling both KF1 and Steam. After uninstalling and reinstalling both I can now start the game (but only in windowed mode which is also annoying) but when I try to select multiplayer server browser I receive a message stating that I need steam running and a connection to the internet, I also get a similar problem in solo play however I can play if I was okay with not having any perks. I have both steam running and an internet connection, I can play KF2 just fine and any other steam games, I have also tested my GPU and there was no issue. Could this be another issue with Windows 10 and KF1?