System :
ASUS-STRIX GeForce GTX970 4GBRAM 8GBVRAM
Intel Core i-5-6500 3.20GHZ
Kingston 8GB 4X2 RAM
ASUS STRIX B250G GAMING Intel B250 2400 MHZ
Zalman Z3 PLUS+

Equipments:
Mouse : Logitech G300S
Keyboard : Logitech G105
Headset : Logitech G430
Mousepad : Steelseries qcK+ Large


Game Settings

DPI:850
Sensitivity:1.3/1.5/1.7
4:3 1280X1020
Volume 0.4

Crosshair : ( you can change style between the 4 and 5)

cl_crosshair_drawoutline "1"
cl_crosshair_dynamic_maxdist_splitratio "0.35"
cl_crosshair_dynamic_splitalpha_innermod "1"
cl_crosshair_dynamic_splitalpha_outermod "0.5"
cl_crosshair_dynamic_splitdist "7"
cl_crosshair_outlinethickness "1"
cl_crosshair_sniper_show_normal_inaccuracy "0"
cl_crosshair_sniper_width "1"
cl_crosshairalpha "255"
cl_crosshaircolor "4"
cl_crosshaircolor_b "0"
cl_crosshaircolor_g "255"
cl_crosshaircolor_r "0"
cl_crosshairdot "0"
cl_crosshairgap "0"
cl_crosshairgap_useweaponvalue "0"
cl_crosshairscale "0"
cl_crosshairsize "3"
cl_crosshairstyle "5"
cl_crosshairthickness "0.7"
cl_crosshairusealpha "1"
cl_fixedcrosshairgap "-4.5"


https://www.youtube.com/watch?v=eds_v2M9V98

AN OLD HACKER: