Left4Dead2 Visuals Multihack

hey dog, with use some weapon mods, if I turn the game video settings -"shader detail" to "high" or above (in video.txt its "gpu_lvl, 2", 3 is very high, and 0 is low ), after injected the cheat, when try to join a game, will crash at loading screen, every time. its happen on 0204HF3 too. and the game wont release any error.mdmp files.
I dont know if its just happen on me, here is the detail of video.txt:

"VideoConfig"
{
"setting.cpu_level" "2"
"setting.gpu_level" "1"
"setting.mat_antialias" "8"
"setting.mat_aaquality" "0"
"setting.mat_forceaniso" "16"
"setting.mat_vsync" "0"
"setting.mat_triplebuffered" "0"
"setting.mat_grain_scale_override" "0.000000"
"setting.mat_monitorgamma" "2.200000"
"setting.gpu_mem_level" "2"
"setting.mem_level" "2"
"setting.mat_queue_mode" "-1"
"setting.defaultres" "2560"
"setting.defaultresheight" "1440"
"setting.aspectratiomode" "1"
"setting.fullscreen" "1"
"setting.nowindowborder" "0"
}

here is the cheat settings Dat file:
https://drive.google.com/file/d/1_eDfwxD...sp=sharing

I really dont know this is my PC's fault or is the problem belong to the game.
because video settings "high" is work fine in game if not inject the cheat.
Hope you can tell me some about it.

no idea, why you touch that file anyways? you can do all that from advanced graphics settings in game settings

I did changed it in game settings