I don't recommend setting it higher than this because the visual difference is not justified by the lag increase. Also check out Tweak3D's Modem Tweak Guide and our Tweak section. You will certainly find plenty of good information to lower pings and boost performance there. How to kick ass, even when lagging At first I wasn't going to mention these tips, because these are my secrets to success. But, since Tweak3D is dedicated to helping all of you, I decided what the heck.
People use the wrong weapons when lagging.
There are no official rules for which weapons to use, but I have a pretty good idea as a Half-Life player. When lagging badly, there is no doubt about it, the Gauss is one of the worst weapons. It is nearly impossible to aim when your ping is high. To give you an example, it's like aiming at a moving target but seeing where the target is with a .5 second delay. However, if you charge the Gauss, you can shoot through walls and the shot is more spread out.