Hit Registration

Makes your clicks land on whatever the crosshair is on at the moment you click.

One switch, Mouse Delay Fix, on by default. Vanilla 1.8 aims each click from where your view was on the last game tick, so after a quick turn a hit can land a little behind your crosshair. With the fix on, it lands where the crosshair is when you click. Patcher and the big clients ship the same fix.

Turning it on

1. Sour Client menu, then Settings, then Input, where it sits as Hit Registration.
2. Change any row and it applies straight away. Reset puts the section back to defaults.

Every setting

In the order the game shows them. Indented rows only appear once the row above is set the way it says.