Before I explain, let me tell you what I used to do before.
Had MSI 7870 Hawk 2GB
AMD 9590 (8 Core 5ghz, 16mb cache)
16mb 2133 Ram.
250 GB Samsung Pro SSD v-nand.
I used to record with selected MP4 and 720p 60fps, h256 AMD profile. Video was smooth and good quality. Perfect file size to upload, all games could be selected with game detection, and could see the framerate green marker at the corner of the screen.
Now the only thing I changed is video card to MSI 1080 Ti x Trio.
Now some of the games will not be detected, not sure if its the video card issue, but I have to choose "record full screen" then the resolution. 1080p 60fps. (I usually use 80% quality), or select window and "Find window" to record.
What happens is that in the worst case say, Fortnite, the framerate drops to 40fps, when you playback the video it looks very bad as the same framerate it was 40fps-50fps. The profile chosen was the Nvidia Nvec. I had already tried just about every option, main, high performance, low latency, 4:4:4, 80%, or 15mb/17mb/20mb/25mb/30mb stream quality, just about every combination, and the framerate drops still while playing/recording and above all game screen is not auto detected. Then I choose to record to AVI and still same issue. Game was launched in Full screen, Windowed, Windowed Full screen, and still same issue, game running max out, 1080p. resolution. Vsync was on and off and still same recording issue.
But. . . If I use Nvidia own recording system, it does record at 1080p 60fps 25mb the video runs smooth, and game runs smooth 60fps.
I don't want to give up on Bandicam, I love your software and the ease of camera setup and menus. You have what others don't have, easy simple menus right to the point and runs smooth without banners inside the game that distracts you or get recorded in front of the video.
Note: All drivers/updates up to date, everything runs fast, no overheating, drive is defragmented, I use the videos to re edit in Power Director and Vegas. Nothing else than the game and bandicam running while recording.