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I want to transfer tokens by running my custom program instruction logic that takes in some custom program-specific accounts to validate and update account data, as well as transfer tokens to the user. The number of users to whom I want to transfer the tokens is approximately 1000-2000. I want to make this transfer to the users as fast as possible.

What do you think is a better choice that will be faster and reliable?

Choice A: Transfer to each user in a distinct transaction. This takes about 50k-150k CU.

Choice B: Bundle transaction to include three transfer instructions to individual wallets. So instead of 1000, the number of transactions that we need to send to Solana would be 334 (1000/3). The CU units will be higher for this transaction as compared to Choice A. (50k-150k)*3 = 150k to 450k CU.

Or maybe there are even better ways of doing this. Open for opinions, thanks!

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This is subjective but I think bundling the instructions and sending them would be a good approach,

If you want the transfer to go through quickly, I would probably bundle the transfer ixs and send them with a reasonable priority fee. Maybe even use Jito with a LUT. In theory this should reduce the tx fee you pay which you can use to set a higher priority fee.

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