Not so much hard as tedious. Par scores feel like "only the map maker played it, who got good at the map" rather than actual par scores.
The holes not having borders is also quite annoying, now they're like some kind of optical illusion which makes aiming more tedious.
The green target, the "stops all momentum" type, at hole 18 isn't positioned properly. Fell off every time, making things more tedious again. And if it's a trap that's just straight dickish.