Below 30 ms - cl_interp" = "0.015625";cl_interp_ratio 1
30-59 ms - cl_interp" = "0.015625";cl_interp_ratio 2
60-89 ms - cl_interp" = "0.015625";cl_interp_ratio 3
90-109 ms - cl_interp" = "0.03125";cl_interp_ratio 2
110+ ms - cl_interp" = "0.03125";cl_interp_ratio 3

But some of it requires playing around as the more you add in interp the more lag you will feel, so you can start with the settings below and work your way up to the above if you shoot someone and it dont feel like the bullets are registering.

Below 30 ms - cl_interp" = "0.007813"";cl_interp_ratio 1
30-59 ms - cl_interp" = "0.015625"";cl_interp_ratio 1
60-89 ms - cl_interp" = "0.015625";cl_interp_ratio 2
90-109 ms - cl_interp" = "0.03125";cl_interp_ratio 2
110+ ms - cl_interp" = "0.03125";cl_interp_ratio 2"