So, my brother was departing intercontinental 3 hours prior to my flight to Prague. I hung out with him at one the main terminals in the crazy long security line, until I could not. He showed up 2.5hrs early, and almost missed his flight. Computers were down or something. Once he got to his gate, he had to take a bus to his A350. Crazy shit show. Quote: "this is so ghetto."
Meanwhile, I went to Terminal 2G, and there was absolutely zero security wait. It was like a 1 screener per 3 people type situation. It was like being at some rich people resort airport. Once I got through security, which took 5 minutes, I was presented with a high-end shopping center, a roving smiling robot garbage/recycling can straight out of Shenzhen asking people for deposits... excellent food, anyone could lay down on comfy couches. It blew my mind. It was France, and Air France, flexing.
… Ah. So I just looked it up; no-one flies to Dublin from there (Aer Lingus is 2A, Air France is 2F). Possibly it’s a Schengen-only terminal.
(Living inside Europe but outside Schengen tends to get you the worst terminals/sections of terminals. Berlin Tegel used to have a tiny little terminal that, as far as I could see, only flew to Ireland and Turkey (not sure where the UK flights went from). Absolutely horrendous; there’d sometimes only be one passport control line, so if the person in front of you had an issue you might be waiting for an hour.)