Scotland’s failure to respond to momentum swings in Test matches “is not good enough”, says assistant coach Peter Horne, who vows that lessons will be learned after Sunday’s “devastating” loss to Argentina.

The Scots led 21-0 before a second-half capitulation allowed the Pumas to roar back for a 33-24 victory at Murrayfield.

It is not the first time Gregor Townsend’s side have veered from domination to desperation. They romped into a 27-0 lead against Wales in the 2024 Six Nations, only to be left hanging on for a 27-26 victory.

In that same tournament, Scotland surrendered a 12-point lead to lose to Italy in Rome.

In this season’s Six Nations, they led Wales 35-8 at Murrayfield but were given an almighty scare as the visitors fought back to 35-29.

“Because we’ve lost and the manner of the defeat, we’ve went into absolutely everything, and to a degree we were absolutely devastated after the game,” said Horne.

“I think it’s tough when you lose momentum in a Test match, it’s difficult to wrestle it back. At club rugby, the swings are nowhere near the same.

“Argentina were excellent, but it’s made us really look at what we need to be better at. When we lose momentum, it’s not good enough the way we’re responding to it, and we need to be able to find a solution to wrestle it back.

“We can’t be shipping three, four, five tries – that’s just not good enough. We had a look at the New Zealand game from the week before as well as coaches, and there was 20 minutes of that game where we were the opposite, we had that complete wave of momentum, we were killing them.

“They had some smart plays, a little bit of gamesmanship in there, but also we come back to we have to lean back in and solve problems as a team.”