Never edit original game files. Copy update/x64/dlcpacks/patchday4ng/ into your GTAV/mods/ folder first, then edit it there.
—this specific folder has a storied reputation. Here is a "review" of its role in the modding ecosystem: The "Patchday4ng" File Review Role: The "Golden Era" Replacement Slot In the early years of GTA V modding, patchday4ng update x64 dlcpacks patchday4ng dlc.rpf
Many modders prefer "doubled size" textures (HD) to make logos and text more readable on these models. Important Safety Tips Never edit original game files