The improvement can be really appreciated when fighting moblins (at least on Wii U). Frame-time occasionally went to zero when fighting these guys, giving you the sensation that the console was about to crash, but I have played the game for a few hours with this patch and I haven't noticed the issue so far.
Also, combat in general feels a little smoother.
My bet with The_Liquid_Laser: I think the Switch won't surpass the PS2 as the best selling system of all time. If it does, I'll play a game of a list that The_Liquid_Laser will provide, I will have to play it for 50 hours or complete it, whatever comes first.