Honestly my thinking was that this was a "Google" phone and it was advertised as such. All the software came from Google...or so I thought. Turns out as with everything from this trash company(Google), I was duped. The bug was eventually traced to a fault in the way the Qualcomm driver handled mixing and I guess they introduced a regression in the firmware. Yeah...I was super pissed so I looked into where the failure was occurring. I seem to also recall which file in the Android source was causing the problem. All they had to do was record a video and play it back! They obviously do not do real QA testing on each firmware release. Or maybe they automated it(like they do with all their crap) and their test rig missed this bug.
It was eventually fixed in subsequent firmware releases(while other things broke). After getting the iPhone as my daily driver, I opened up and started using the Nexus 5 as a tinkering testbed for custom roms. The smoothest firmware I have seen was a Cyanogen Mod release in late 2015 although it still had rough edges compared to my iPhone from what I recall.
Original iPhone (2007), iPhone 3GS (2009), iPhone 4S (2011), HTC One X (2011, not because the iPhone broke, a friend convinced me I should try Android, and on paper it seemed like I would love that so why not?), Samsung Galaxy S3 LTE (2012), Sony Xperia Z (2013), Sony Xperia Z1 Compact (also 2013), (LG) Google Nexus 5X (2015), iPhone SE (2016), iPhone X (2018), iPhone 12 mini (2020).
I actually knew I was done with Android by the time my Z1 Compact broke in the same way it had already been repaired for once (small crack in the display glass which the digitiser was glued to meaning touch stopped working on one side of the crack, unfortunately about 90% of the screen), but I figured maybe I've just been buying the wrong brands and figured I should give Google, the premium brand, a chance before I went back to iPhones for good.
Alas, the Nexus 5X was so bad (laggy, terrible battery life) I actually went back to my iPhone 4S (which I had also been using between the Z1 Compact and the 5X) within the first year, and then bought the iPhone SE when it came out and never looked back. That iPhone SE actually went to my little brother when I bought the iPhone X, and he stopped using it in 2020 after the screen finally cracked (still usable because Apple doesn't glue the digitiser to the display glass like many Android manufacturers do, a practice I personally think is to force repairs since it becomes impossible to use them without a repair).
I actually enjoyed nexus 5, nice form factor, awesome weight.