I haven’t used any ATM but speed of bitcoin transactions depends on how saturated the mempool is and the fee you pay. The higher the fee the faster the transaction.
Speaking of mempool, unconfirmed transactions are less than 4K currently as per (
https://blockchain.info/unconfirmed-transactions) so I don't think the network is clogged. I only haven't try to used ATM, but usually as @Don Pedro Dinero, probably based on mempool , however its not saturated. The only thing we need to look at is the transaction fee. Anyways, it looks like there's no issue that I'm seeing that can delay your withdrawal so I guess you need to wait and see how it goes for you.