Thus far,  I've only regularly been on the player side of the table, but my perception is this:
HP being the primary way for enemies to advance results in some battles dragging at high levels. 
At mid to high tier play, 5E combat appears very swingy; either a combat is a cakewalk or the enemy trounces the PCs.
Ranged combat seems to benefit greatly from the low AC & high damage output style of 5E foes; you take advantage of a weakness rather easily while avoiding an enemy's strength completely. 
There are a lot of options for a caster to bypass HP entirely and end a fight very quickly. 
Boring?  That's hard for me to answer.   I'd say that I enjoy 5E, but it's a lot more shallow than I'd prefer.   I'm starting to feel a little burned out, and that seems a bit odd so early.  Maybe part of it is the lack of granularity and choice; occasionally,  combat seems to highlight that.