Where do Windows 10 lag in Phone World

Besides lacking apps performance, or lack thereof, is a big focal point for me personally. That's the main aspect that usually has me putting my devices back into their resting place in short order since it becomes daunting real quick.
 
Lumias may have hardware issues and definitely have battery problems but that’s not a Windows 10 situation because my Idol 4S and x3 perform flawlessly as far as hardware is concerned. My previous Liquid Jade Primo was just as good in spite of using the same processor as the 950.

App gap is universal, no argument here.