Missing assets causing random freezing

[FurtadoPires]

Description

Playing normally without mods, I notice the game sometimes freezes for one second when it tries to use the following assets (resulting in those messages):

"materials/videobikmaterial_backgroundcb.vtf": can't be found on disk
"materials/videobikmaterial_backgroundcr.vtf": can't be found on disk
"materials/videobikmaterial_backgroundy.vtf": can't be found on disk

I don't know what the purpose of those files, but the game usually calls for then in hordes.

I've already check the integrity of my files so I'm sure steam isn't sending then, so I think those references should be removed or steam should provide those files by default.

Reproduction steps

Play the game, then check console output once the random freeze happens. It's easier to check using -dev in the launch parameter.

Additional files

No response