Sorry for the delay. I've been trying to find a solution. I know I've dealt with this problem in the past, I just can't remember the solution, but will keep looking.
In the meantime you can use the following commands from the netcode section of the autoexec to manually lower your lerp, set your rate, and improve your connection:
rate "60000"
cl_cmdrate "101"
cl_updaterate "101"
cl_smooth "0"
cl_smoothtime "0"
cl_interp "0"
cl_interp_ratio "0"
cl_interp_all "0"
cl_lagcompensation "1"
cl_lagcomp_errorcheck "1"
cl_pred_optimize "2"
The specific commands that pertain to lerp are:
cl_interp "0"
cl_interp_ratio "0"
cl_interp_all "0"
Edit:
Also, I may have found a solution. Please edit your autoexec to the following and try your flashlight again:
Change :
r_shadows "0"
To:
r_shadows "1"
Rather's post in Resolved - Microphone was marked as the answer