As title says, the barriers/room void's are too 'sticky' for the player when passing them even at shallow angles. Here's an illustration demonstrating the difference between how collision friction is handled in TESV: Skyrim vs how it is in Hazeron. A smoother transition between collision and travel is appropriate in my estimation.
Skyrim: https://i.imgur.com/Ru88a0Q.gifv
Hazeron:
Skyrim: https://i.imgur.com/Ru88a0Q.gifv
Hazeron: