I've noticed the same on Leviathan. It's getting to be an annoyance now trying to queue for anything, be it roulette or a specific duty. I queued for the 4 Midas raids last night & although it said 5min or so I waited 20 minutes & didn't get a pop so gave up. Expert Roulette took about 15 minutes, which is unheard of & is unusually long even during UK daytime (morning in the USA). It only started like this since 3.21 in my experience. Thing is, it can't be due to The Feast as that's got quite long queues too!