I definitely found it very clunky too. A mix of the 30fps, a closer field of view, generally slower movement. But I think another part of it is probably that the weapons we picked and got used to have probably been changed/nerfed or we don't remember the setups we felt comfortable with. I'm also finding my Hunter feels really weak, not sure if some missions are actually more difficult but I'm definitely struggling to solo a few normal missions....
That said I'll play all night tonight and tomorrow, plus Saturday morning, I do want to raid.