Mouse cursor keeps leaving game window - this just started

[Estria Del]

I've been playing this game for a while now and all of a sudden a couple of days ago, I'm running into this issue. My setup is two computers with two monitors each. I'm controlling both computers using Synergy.

When I'm in CS:GO (no other game I've played exhibits this behavior) my mouse cursor leaves my main monitor and goes to my secondary monitor. This isn't a problem and doesn't affect my game. However, the problem arises when the monitor goes from monitor 2 to monitor 3 (switching computers through Synergy) it causes the game to alt-tab on my main computer.

I haven't changed any CS:GO settings, installed new software or hardware, or anything else I can think of. I don't remember when it was (just a couple of days ago) but it just started happening. Prior to this, everything was great and the mouse cursor just stayed on my primary monitor.

Google has given me two potential solutions: Make sure game is in fullscreen and not fullscreen windowed (which it has been) and make sure raw input on the mouse is set to 1 (which it has been) so I'm at a loss now. I've seen people complain about similar problems but never this exact problem. Any help would be appreciated.

[Kitai]

duel monitor issue is known play in fullscreen dont use windowed mode use boarderless window full screen for window and fullscreen my happens on windowed mode and full screen but not on windowboarderless

[Estria Del]

I don't quite understand what you're saying. I've had the game in Fullscreen since I installed it and the only time I've switched it to anything else is today when I was trying to fix this issue.

You're talking about a window borderless mode, I don't know where that setting is.

[Cox-Zucker machine enjoyer]

Video settings

[VeeWTF]

I’m having the same issue in full screen my mouse keeps going to a different monitor

[VeeWTF]

Originally posted by BD3 Vurtical:

I’m having the same issue in full screen my mouse keeps going to a different monitor

I FOUND A FIX PUT GAME IN FULLSCREEN AND RESTART PC