This mod provides the required assets to run Horizon Duel GT, and comes in 3 forms. Please choose the corresponding variant to your specs, running too high for your PC will cause it to hit the page file, can cause your PC to freeze and might also require a force restart. These are the options:

Full: Full 4K renders, requires a pretty decent CPU to make loading easier, and also uses well over 6 GB of ram in gameplay, so I recommend 12 GB or more

Mid: Renders are reduced to the ideal resolution for 1080p displays. This will run on basically any modern PC and uses around 2-3 GB of ram, making it fine on 8 GB systems

Low: Renders are further reduced, and attempts to use as little memory as possible. This will increase the memory usage of BW by around 700 MB so there's not really any estimate, but this should in theory run on 4 GB of ram

Remember that this mod provides assets only, it does not allow usage of those assets (and they won't be useful anyway)