A:Answeri was using it in windows 10 rotated vertically to run MAME games so no I don't see a big issue there, the aspect ratio may be slightly off, a lot of arcade games are 4:3 or something but I found the experience spectacular for arcade games anyhow so I don't see why you'd have any significant issue. Just use a frontloader.
A:AnswerFreesync is useless on console because many devs cap the frame rate at either 60 or 30 fps. This monitor has had no screen tearing and I’ve been playing on it using my Xbox. Good luck with the monitor, it works well for me and I hope the same for you :)
A:AnswerAs long as whatever system you have has a sleep mode itself, it will go to sleep with it. For me, my computer goes to sleep along with it. Also it will go to sleep with my PS4 if the PS4 goes into sleep mode.
A:AnswerDepending on your internal GPU on your laptop, the max output resolution if offers may be limited and thus possibly reducing FPS. You may have to play around with your setting to get the FPS adjusted to your liking. Check the computers specs and manual to see if it can offer the output of your liking.