Here is the industry secret: You are either extracting the data perfectly, or you are failing. "Extra quality" in this context refers to:
Many users stop after conversion. This is why their "quality" is low. You must run the NSP through a verifier. rar to nsp converter extra quality
The Nintendo Switch homebrew community frequently utilizes the NSP format, which is essentially an encrypted or decrypted dump of a title installed from the Nintendo eShop or physical cartridge. Due to file size limitations on file-sharing platforms and archival efficiency, these files are often distributed or stored in compressed formats, most notably .rar (Roshal Archive). Here is the industry secret: You are either
RAR (Roshal ARchive) is a proprietary archive format. Developers do not distribute games as .RAR files. Instead, scene groups and P2P uploaders split large Switch games (often 5GB to 15GB) into smaller 100MB or 200MB .rar , .r00 , .r01 parts to bypass file hosting limits. You must run the NSP through a verifier