In Chia, all transactions within a single block are processed simultaneously. As long as your NFT makes it into a block, it will take the same amount of time as any other transaction to process. The only caveat is that NFTs have a higher CLVM cost than XCH transactions. Therefore, if the mempool is full, a higher fee will be required in order for an NFT to be included in a block. However, if the mempool is not full, then this caveat does not apply.
