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This addon changes nothing but will make you happy!

###### NEW WORKSHOP DESCRIPTION (Dec 9 @ 1:01pm) ######

UPDATE:

The developers of this addon would like to apologize for the previous confusion!

Pending ongoing correspondence here:

https://gtm.steamproxy.vip/id/Rayman1103/allcomments

We have made the necessary modifications to make this addon compatible with Left 4 Dead 2!

No modifications of the package were necessary. We just needed to clarify this wasn't an actual "fix".

###### OLD WORKSHOP DESCRIPTION (Nov 24 @ 10:05pm) ######

WARNING:

This user who will remain anonymous (creator of mutation and admin mods):

https://gtm.steamproxy.vip/id/<Sega Saturn character with floating arms and legs>1103/allcomments

Is actively trying to censor this addon. They are complicit in another unrelated scandal described in the below video. They have motivation to not act on that scandal because they are a contributor. Another contributor to said project (also unnamed) had the integrity to actually leave. The above user did not. More information is in their profile comments.

What's the deal with Helms Deep Reborn?
https://www.youtube.com/watch?v=CestDbQ1eOs

You can still subscribe to this addon. The above user is not willing to communicate whatsoever to resolve this like adults. This is the thread they just locked. The thread contains checksums for Valve's 4 correct model files in addition to the bugged ones. How the files got bugged is anyone's guess, but we have multiple testimonies that they are bugged for some people:

PSA: the lamp / Valve content update
https://gtm.steamproxy.vip/app/550/discussions/0/1661194916748450813/

They are not willing to communicate. An addon cannot be "incompatible" if it contains 4 files that are Valve's own original files for the purest means of correcting them.

ITEM DESCRIPTION:

Video example, before and after addon enabling:

https://www.youtube.com/watch?v=_I_uRnpj-GQ

Recently there was a hidden unannounced content update to L4D2 that added this lamp to the game, amongst some other little things. This led to just enough of an increase in the polycount of some maps to result in movement stuttering. It's only a problem with the lamp because of its dome shape suffering from massively excess subdivision, clearly in error. The average human eye won't notice any difference without "mat_wireframe 1". This addon rectifies the subdivsion and therefore the stuttering without removing Valve's new content.

The bugged lamp version has over 20,000 polygons, with RTX graphics cards suffering:

Have RTX 2070 and Left 4 Dead 2 does not run smoothly at all
https://gtm.steamproxy.vip/app/550/discussions/0/1661194916747143876/

Special thanks to K.U.B.A.S for being the first to notice there was a hidden update and report the stuttering:

Update
https://gtm.steamproxy.vip/app/550/discussions/0/1661194811511464004/

Do observe this was, in fact, a hidden unannounced content update:

http://www.l4d.com/blog/

Following is a conversation between Red Son and Sharples, just in case the conversational tone helps to explain it better:

[22:38]
Red Son™:
Wait that’s true?
The stuttering thing?

[22:42]
Sharples:
Yes, even I get it
There's a lamp in No Mercy as you go down the stairs
they added extra polygons as it was missing textures
trust me, everyone got it
and its causing huge stutters

[22:43]
Red Son™:
I’ll test this out
If this true, then Valve is mega ♥♥♥♥♥♥
If not, then I’m lucky
I’ll try with and without mods
Will mods change polygon

[22:44]
Sharples:
what graphics driver do you have?
and yes, mods will change it
if it changes the lampo

[22:44]
Red Son™:
RX560X

[22:44]
Sharples:
not sure if that'll cause problems
you might be lucky
you shouldnt need to rollback
thats so stupid
for one game...
no
i dont think so

[22:49]
Red Son™:
Well, either you wait for Valve’s to fix their latest failure or you do this
Either way, not sure if it’s going to happen

Credits:

K.U.B.A.S - original discovery
Sharples - confirming the bug
Red Son - beta testing
Bozo The Clown - proof and raising awareness of bug
Myself - this fix