Yes... and there's really no way to tell unless the simulation actually tells us.
An easy test for this is to ask anyone who's either on mind altering chemicals, or schizophrenic[0]. That makes it clear that you are really perceptually bound.
[0] I don't mean to say that these are even close to the same thing. I just want to pick two extreme examples.
How many of us remember the first moment we became conscious?