create a multi key command with the following parameters:
{
0.01 sec delay
Right Button Down
0.015 sec delay
Right Button Up
0.015 sec delay
down Space
0.01 sec delay
up Space
0.355 sec delay (the important part)
Left Button Down
0.01 sec delay
Left Button Up
0.015 sec delay
down Q
0.01 sec delay
up Q
0.02 sec delay
down Q
0.01 sec delay
up Q
0.01 sec delay
}
Bind to whatever mouse key you wish to use.
Profit!!!

The delays are set up as shown to avoid the game not registering consecutive key presses I.E. not scoping in, not shooting etc.

You may adjust all delays as you see fit except for .355 sec between jumping and shooting, the delay needs to be between .335 and .365 seconds for best results,
on my pc i found that .350 or .355 sec delay works best (feel free to experiment)

Protip: aim your crosshair directly below the where the head would be and between the feet and knees of a model before jumping to get a headshot at long range.

this works great at prefiring window on mirage from behind boxes at mid, or firing down long on dust etc..
You can probably replicate this with AHK for other mice
This is probably perfectly safe from overwatch, in fact they will probably think you're just highly skilled and not convict you lmao
pics:
https://imgur.com/a/9Qhdnqy