Windows 10 Mobile has a Cortana-related high background activity bug
Some Windows 10 Mobile testers have noticed that the OS has a lot of background activity that might slow down its performance. In a series of Twitter posts, Windows Insider leader Gabriel Aul has confirmed the issue is related to its Cortana digital assistant feature and that it is still in the new 10549 build.
The temporary workaround for this issue is a simple one, according to Aul: just turn Cortana off and the performance hit for Windows 10 Mobile should be taken care of. However. it looks like we will have to wait a while longer for a proper fix for this bug.
Source: Gabriel Aul (Twitter); Via: WinBeta
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Unless you're saying the QQ's are lining up, which in that case, seems like a fun time.
It is a tech preview. If you don't like the hurdles that come with a tech preview, go back to 8.1. I think it's worth it. We get to see what's coming before anyone else and can help shape the future of Windows phone! How awesome is that? I'm using it on my daily driver, sure it's frustrating, but being in tech support I can tell you that the grass is not greener. When Lollipop came out, I had to take so many people through factory resets because it ruined their Samsung S5s and Note 4s. Same with iOS 8 and 9. These are production-ready, final, gold, shipping OS versions. Ours is a work in progress and yeah it sucks at times but I did the FDR once and now that I know Cortana was staying at the office later working overtime I'm sending her home. I hope that provides some perspective on these issues inherent to what amounts to a pre-beta program.