Since I'm outside the US and couldn't find that info in the thread - just how slow these payments are? To me, waiting these 2 seconds for confirmation already seems slow.

At Lowes (a big box hardware store) in a major US city, I'd say consistently 3-5 seconds.

Caveat that perceptually this seems like a lot longer due to the variable action flow (sometimes sign, sometimes take card immediately, sometimes error) that demands attention.

Sometimes 10-15 seconds.

Hate to be the bearer of bad news, but contactless in the US is fast because it generally transmits magstripe data.

Apple/Samsung/NFC Pay is not mag stripe. It is generally faster than a chip card.

Apple and Android Pay are not mag stripe, they're proper encrypted nfc payments. Samsung pay CAN be a magstripe emulation, for terminals that don't support NFC.

To clarify, EMV supports tokenized transactions that emulate the _contents_ of the magnetic stripe over NFC, and this is what is broadly used in the US.

Note here[0] that Chase states that only contactless MSD support (contactless magstripe emulation over NFC with a dynamically-generated security code) is required for Apple Pay; a subset of contactless EMV.

[0] https://www.chasepaymentech.com/developercenter/applepaymode...