Goals from Wes Burns, Marcus Harness and Conor Chaplin ensured Dons slumped to the bottom of the League One table after one of their most disappointing showings in a while.
Here’s how we rated the players at Portman Road.
13. Sub: Zak Jules - 6
Almost got on the end of a cross within a minute of coming on and made a break into the box but couldn't alter the course of the game Photo: Jane Russell
14. Sub: Dan Kemp - 5.5
Suffered the same fate as the rest of the attacking players when coming on. Photo: Jane Russell
15. Sub: Darragh Burns - n/a
A late introduction with just four minutes to go when the game was gone Photo: Jane Russell
4 / 4