I use controllers whenever possible, especially with platformers, as I'm much more used to them than I am to keyboard when gaming. With keyboard I was averaging 6:30 (I'm not too good right now, it's only my third day of playing) but then my first two runs with controller were both sub-5:00, and one of them was sub-4:30. It just feels... better to me. Anyone else?

i primarily play with keyboard but i knmow that feeling. but in term of speedrunning refunct it would just be akward for me because i have exactly no timing with controller. btw join the refunct discord channel if uyou havent already its a better place for things like this

The problem with using a controllers is that there are many parts of this run that require you to have fast and precise camera movement, which just isn't going to happen realistically with a controller. You can certainly get good times with it, and probably get sub 3, but controller will always have a disadvantage to m&k in 1st person games.