Garry's Mod Security Guards vs Dead Space Necromorphs

I wanted to add just Dead Space Marines, but they lag the game so much, I was only getting 20 fps and I know it is not my PC, anyway here are the links too the mods.
https://steamcommunity.com/sharedfile...
https://steamcommunity.com/sharedfile...
https://steamcommunity.com/sharedfile...
https://steamcommunity.com/sharedfile...
https://steamcommunity.com/sharedfile...
https://steamcommunity.com/sharedfile...
https://steamcommunity.com/sharedfile...
https://steamcommunity.com/sharedfile...
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