Please use the MSO helpdesk form when posting a ticket in the future Wirths. (I've filled it out for you this time.)
Your network settings in your config are almost identical to mine except for cl_interp_ratio. Does your lerp ever turn yellow or orange? If so you might need to tweak your settings.
You can try launching a local game and first typing "sv_cheats 1", then "sv_showimpacts 1". Try emptying a Garrand a few times. Your impacts should be purple, if you have a problem you'll see two separate blue and red marks (red for client, blue for server). It may happen occasional which isn't an issue, but if it happens regularly you may have a problem.
I couldn't find any colour blind settings for your crosshair but I'll keep looking.