i KNOW It makes it lag worse

yeah the npc model or shadow is the only thing that removes when youre not looking its sill there why yu ask? well if you look away from a zombie or a combine theywill still hit you so this practicly means that the game still caculates npc speed npc damage or navmesh couse npc is still there and running or just a prop.

this just makes the game do more sht so it lags more.

guys i downloaded 500 GB of gmod sex mods and now the game is unplayable

Yeah I have lag whatever I do, I even have a decent PC but it still lags. I love this game so I really wish there was anything I could do. I even checked Forums and the Thread on the Gmod Community Page and did what it said but still.

I understand that the engine is very old, but is there really no way of improving it?
The biggest problem in it is of course the NPCs. They are a very important part of the game
so I don't get it how they could mess this up so badly.

I'll try and reply to everyone here since it seems alot of you need the help now to start garrys mod runs on the source engine and this is terrible for lets say AMD based systems because the multiple cores is disabled by default and this game isn't in 64bit like most newer games are nowadays and this can lead to performance issues now there are ways to fix this issue and allow for better performance overall including but not limiting to,

1.switching to the 64bit version of gmod which we'll help alot for people on a new windows 10 pc (this might increase fps but this is mainly a performance fix) (to do this right click garrys mod in steam hit properties and go to betas and pick the new 64bit version.)

2.enable multiple cores and threaded optimizations for the game this is really simple and all you need is notepad++ but first go to the garrys mod folder then hit garrys mod and find the
autoexec.cfg edit it and put in these commands

cl_threaded_bone_setup 1
cl_threaded_client_leaf_system 1
r_threaded_client_shadow_manager 1
r_threaded_particles 1
r_threaded_renderables 1
gmod_mcore_test 1
mat_queue_mode 1
cl_forcepreload 1

This is what i personally use even with my 2070s don't listen to the ♥♥♥♥♥♥♥ of steam lol having a good gpu/cpu is the main problem with this game so upgrading won't fix ♥♥♥♥ this should fix alot if not all of your problems and if you have questions feel free to ask me and I'll try and get back to you when i can!
Enjoy the game though it really is amazing and has alot of great content once you get past the first hurdle of optimization lol

引用自 Haiiu：

I understand that the engine is very old, but is there really no way of improving it?
The biggest problem in it is of course the NPCs. They are a very important part of the game
so I don't get it how they could mess this up so badly.

Hey read what i put

引用自 Schnoz：

Yeah I have lag whatever I do, I even have a decent PC but it still lags. I love this game so I really wish there was anything I could do. I even checked Forums and the Thread on the Gmod Community Page and did what it said but still.

Hope what i put helps!

引用自 SPY：

i KNOW It makes it lag worse

What i put should help!

引用自 Gabe Newell：

this game is unplayable, no matter what you do to try to fix the problem. upgrade your pc, nope. try using this mod from the workshop, still nope. you know this game sucks when you compare this to kingdom under fire heroes that can have more than one npc coming at you in one full screen without having lag when this garbage's mod can't even run one pixel on the screen without having a heart attack. then on top of the s h i t sundae is you having to pay 29 dlcs in order to get the mods to work which is very expensive.

What i put should help you hopefully!

for me it used to work without lag but for some reason now it lags even though i have cleared my addons before and now have like 5 addons

The only problem for this is the outdated game engine.
If it would've ran on Source 2 things would've been much better and smoother.
However this engine itself was never made to run 60 to 90 NPC wars lol.
Even GoldSource runs better with that amount of NPC's such as the ones from Sven Co-op.