It is. i've used this for years now.
I have the same settings, except r_overbrightsbits 3 maybe try this, working fine for me.
I can post maybe later some screens.
EDIT: No needed to post a screen, its exactly like this for me^^
http://www.canon.de/For_Home/Product_Finder/Cameras/Digital_SLR/EOS_1100D/
Pretty good camera for amateurs. Objective is good enough. Maybe an other one with more zoom. Because 18-55 is not really much.
If u want to move faster in a 1v1 without pressing shift.
Use this. Than u sprint always when u shoot/pressing Mouse1
Bind mouse1 "+vstr min mout"
set min "+sprint; +attack"
set mout "-sprint; -sprint; -attack; -attack"