Hello!
I've been using XT1032 for a while as someone that's mostly new to smartphones - it's an upgrade after heavily worn out LG GT540. However after rooting it, installing official CM and updating to the latest nightlies every second day or so, I still have several problems. I'm sorry if there's too little detail in this post, I'll try to add detail later on.
First off, I don't understand how the storage space works. The phone is supposed to have 8GBs of internal memory, however only 5.5GBs are accessible to the user. Additionally, applications refuse to install when the system reports that there's ~400MBs of "space" left. Is this because of a partition being filled up? The Apps panel of system settings isn't specific what is taking up too much space and I'm afraid the DiskUsage app doesn't help either.
Second thing is the actual available RAM. It's supposed to be 1 GB, but Z-DeviceTest reports only 885MBs being available. Where's the rest? There's also swap of 255MBs that I don't know where it came from. I thought that on a low-end smartphone they wouldn't waste internal storage on swap.
There's a trick to increasing available storage space by linking the /cache folder to root. How does that work? How do I know if the folder is being used or not, and if it's safe to do this? DiskUsage doesn't show this folder normally, and when switching to it in root it's being 651MBs large, with "System data" taking up 11.2MBs and pds-CM10.img 3MBs. There's also recovery and backup folders, 56KBs and 16KBs respectively. Why is it this big anyhow, if it's not being used?
The most immediate problem, and the one that annoys me the most since I bought the phone for a certain purpose, is that Google Play Music is lagging terribly. It uses ~110MBs when I switch to the Running Apps screen from the settings quickly enough to check its stats, each song takes several seconds to load even on WiFi, no matter the quality, and the worst part is that even if it "loads up" it takes several additional seconds to scroll around it! It's not just the playing affected, the whole interface is sluggish. Screens take seconds to switch between each other, returning to the app after opening two applications makes it either "restart", where it still plays music, but you can see that the interface is now several screens back. How is it possible that in 2015 an operating system developer can't make a performant app that's not a game, that's not a video editor, but a god damn music player? The only quirk is that it's streaming the music from the net instead of playing a downloaded file. It has a cache that uses over 700MBs already, no excuses. I checked that with DiskUsage.