It looks like Windows phones home every time you hit the start button, and when web search crashes, it arbitrarily waits for the crash dump to be reported to the mother ship before launching again.
The most useful information is at the bottom of the comments:
"I had some of the same issues – just with start menu being too slow. I disabled web search for start menu, and it works, is fast, only finds apps (and other local stuff; documents, folder, settings – but only when you navigate to that specified search target).
Bottomline – turning off web search in start menu = speed
regedit/use at own discretion:
HKCU\Software\Policies\Microsoft\Windows\Explorer
“DisableSearchBoxSuggestions”=dword:00000001"
The most useful information is at the bottom of the comments:
"I had some of the same issues – just with start menu being too slow. I disabled web search for start menu, and it works, is fast, only finds apps (and other local stuff; documents, folder, settings – but only when you navigate to that specified search target). Bottomline – turning off web search in start menu = speed
regedit/use at own discretion: HKCU\Software\Policies\Microsoft\Windows\Explorer “DisableSearchBoxSuggestions”=dword:00000001"