It's my daily drive, the battery is not that great probably because of the 1440p display, the glitching in the display only happened to me because I dropped the phone on the floor with the corner with the display connector down suffering the impact. But the phone do not feels slow to me, I even play Fortnite and PUBG with no down frames, I really cannot say bad things about it's performance, it holds up to today's most demanding apps with no hassle.
It's a really solid phone, aluminum body with great heat dissipation (a thing that most Snapdragons 820 didn't had). One of the best Hi-Fi phones out there, great DAC. Can support MicroSD cards up to 2TB, dualSIM, VolLTE, 20MP camera and with the Google Camera it truns to one of the best cellphone cameras I've ever laid my hands on.
Now the main problems are the ZTE updates which stopped in Oreo betas, the custom ROMs are great but you lose Dobly Atmos with them, to get you need to install a lot of patches to make it work and it doesn't work perfectly.
And MiFavor, I installed CPL and never replaced my launcher after.