Garry's Mod

Garry's Mod

Prospekt Defense (gm_prospektdefence)
i have a question considering this addon i wish to use
as with this combine addon, https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2807525115 , i have tried testing it myself, but it seems to excessively lag the game while also increasing the view distance of the combine too far to the point where they shoot from the other side of the map to where the rebels spawn, is there any possible remedy to these issue that you may suggest?