This is what I use, it is a toggle that will raise and lower it and report to me in the chat what I changed it to. If you use this in conjunction with your lag-o-meter you can keep lowering your netclientprediction to the optimal level right before the meter turns red.
Usually I am able to play with it stable at 1 or sometimes 0. Word of warning, avoid the lame servers that have rules against changing it. Those are generally the same ones that ban for planing on the North Sewer Grate.
bind “[” “cvarAdd net_clientPrediction 1; addchatline ‘^2clientPrediction:’;addchatline $net_clientPrediction”
bind “]” “cvarAdd net_clientPrediction -1; addchatline ‘^2clientPrediction:’;addchatline $net_clientPrediction”