I've checked WindowsApps folder once, and there were a ton of apps with an old version (x86, x64, noarch) and a new version (once again all the architectures).

I've checked WindowsApps folder once, and there were a ton of apps with an old version (x86, x64, noarch) and a new version (once again all the architectures). In total 6 (!) versions of the same application, each taking up to 60MB. Code quality has dropped significantly as well, Settings, Taskbar, Mail crash and lag.