i was open sm64coopdx and work but something looks like directx 11 feature level 10.0. I trying switched OpenGL but failed to accelated graphics. so I using wtfi.exe called wtfi tool. to accelate graphics and works! if trying singleplayer, no problem. and we about multiplayeryeah, so it trying play online but something not connected with wtfi tool.multiplayer does't work 
help us to access multiplayer!so think using intel hd graphics 2000 & 3000.
help us to access multiplayer!so think using intel hd graphics 2000 & 3000.