1. gl_vsync 1/0 - If enabled , less tearing on the screen ( recommended setting 0 )

2. fps_max 100/150 - Generally the game runs better and the physics are as intended when you play around 100 - 150 fps - more fps more broken physics and more game advantages: See this video for the difference

3. cl_minmodels 1/0 - If the server that you play has fancy models and you can't hit them its because of the models and the hitboxes doesn't match , so if you prefer the basic models of the game use it on 1

4. cl_cmdrate 10/128 - It's the max number of packets you want to sent to the server , default can be used 64 , 101 , 102 (It depends how well your internet can handle it ) so test it for yourself with random numbers

5. cl_bob 0/0.01 - It's for weapon bobbing i.e walking with weapon , to make it not bob use 0

6. cl_cmdbackup 1/2 - In addition, with each command packets(cl_cmdrate), we re-send the last few previous movement commands ( in case there is packet loss ) so that we can keep moving smoothly in the face of minor network problems. The default number of "backup" commands that we send is 2, but you can change this number by setting cl_cmdbackup to another number. You can send more than 8 backup commands and you should note that sending backup commands will increase your outgoing bandwidth usage.

7. cl_dynamiccroshair 0/1 - Easiest example is try it with duck , if you don't want your crosshair to open more use 0

8. cl_lw 1/0 - With 0 - The server calculates your recoil , 1- Your client calculates the recoil

9. ex_interp 0.01/0.1 - If you play in LAN server use 0.01 , for online servers use 0.1

10. gl_overbright 1/0 - Dark places can be more visible ( Recommended 1 )

11. hud_fastswitch 1/0 - For seamlessly fast switching weapons use it on 1 , othwerise when you press example primary weapon button
it will indicated on gui and you won't be able to switch faster to the desired weapon.

12. m_rawinput 1/0 - If you experience mouse issues you can test this command too , basically it enables raw input of your mouse
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1. cl_backspeed 400 - It's for the speed when you go backwards

2. cl_sidespeed 400 - It's for the speed when you go sideways

3. cl_forwardspeed 400 - It's for the speed when you go forward