HelpFPS Drop/Lag

Hello, everytime I use a hack for Garry's Mod except a select hand full always cause my FPS to go down. Even if the ESP and mainly the hack is disabled my FPS goes down from 50-60 all the way to 10-15. This causes me to lag and makes my game play horrible. I have a good computer and run garry's mod at the highest settings. I don't want one of those configs to make everything turned off and low/etc. Please tell me how to stop my FPS from dropping! P.S: This only happens on servers more then 30-40+ players.

This mainly happens due to the reason that the hack enables so fast that it doesn't give the server time to actually enable all the features which is basically how every lua file work's no a-days, i really suggest just using a basic Aimbot/Triggerbot/esp instead of using a full on multi-hack, hopefully that helps!

What GPU are you using?

may i suggest you don't use a prebuilt?