I have a question for the createCreateMetadataAccountV2Instruction. I'm trying to calculate the fee with Metadata.getMinimumBalanceForRentExemption But seems it returns wrong value. I'm getting this error from the transaction.

Transfer: insufficient lamports 2491680, need 5616720

The function returns 1600800 but should be higher.

const metadataFee = await Metadata.getMinimumBalanceForRentExemption(
        {
          key: Key.MetadataV1,
          updateAuthority: mintAuthority,
          mint: form.mintAccount?.pubkey,
          data: tokenMetadata,
          primarySaleHappened: true,
          isMutable: true,
          tokenStandard: TokenStandard.Fungible,
          uses: null,
          collection: null,
          editionNonce: 255,
        },
        connection.current
      )

Please tell me if the args seem wrong.

Also I tried the Metadata.biteSize and it returned 102 but it's actually 679.

https://explorer.solana.com/address/R747jBxHo56wfb7FqVymdQWYpeny16Po6WwmXiiQ9g6?cluster=devnet

How to know the true rent fee? Please let me know if you know something about this.

Thank you always. Have a good day!