CS:GO with Gyro + Flick Stick on a DualShock 4 (JSM)
https://www.youtube.com/watch?v=GzbZq4OjEwE
This seems like a really neat way of increasing the ease of aiming with a controller while playing FPS games. When I played Splatoon 2 and Breath of the Wild I was introduced to this method of using the gyro in the controller to fine-tune your aim more precisely, while also using the stick aim for big movements, and it was very cool. This guy made a program for PC that he claims works even better than Nintendo's implementation of it in those games, and it's definitely worth checking out. It's compatible with the DualShock 4, JoyCons, and the Switch Pro Controller.
I'm not so hot on the flick stick function though. I don't like the idea of being able to turn 180 degrees instantaneously, so I don't think I'll use it.
You can download the program here:
https://github.com/JibbSmart/JoyShockMapper
And there's guides on how to get it set up with whatever game you want to play here:
http://gyrowiki.jibbsmart.com/