Wood and Flags Textures Bug

I have a problem with wood textures and flags. I have all the graphics on high, only the textures of the flags and wood look like this, everything else looks perfect. The game is vanilla and I only have the campaigns of Enemy Territory, Dark Army and the German voices installed.
https://steamcommunity.com/sharedfiles/filedetails/?id=3713898831
https://steamcommunity.com/sharedfiles/filedetails/?id=3713899021
https://steamcommunity.com/sharedfiles/filedetails/?id=3713899187
Is there a solution to this problem? My PC supports modern games like Starfield, No Man's Sky, Deus Ex (Mankind Divided), etc. So I would rule out lack of memory.

Hey. Its probably some other texture pack content overlap. Can you send me screenshots of insides of your Main folder of both rtcw and realRTCW?

First of all, thank you for the quick response. This are the "Main" folder of both games:
Real RTCW:
https://steamcommunity.com/sharedfiles/filedetails/?id=3713925879
Vainilla RTCW:
https://steamcommunity.com/sharedfiles/filedetails/?id=3713926058

Thanks. sp_pak5, sp_pak6 and sp_pak7 are not part of official game. Move them out of RTCW main or delete.

Thank you very much for the solution indicated!. I remember now, that in the vanilla game I had installed ages ago the "Venom Mod" that improves textures. Copying the indicated packs to another folder and removing them from the Main directory solved the texture problem. Again thank you for the quick response!!!