Anyone on 64 bit Office 2013?

Hi all-
I'm running win8-64 and office 2013-32. Outlook crashes about hourly, requiring me not only to restart outlook, but also kill X1 processes manually to get X1 to restart (If I just "exit" x1 normally, x1 mail "preview pane" says that x1 has lost the connection.).

I have several pst files > 2gb. I'm wondering if office 2013-64 might give me more stability.

Anyone have insight into whether 64 bit office will bring me relief? Or do I have to run the experiment myself? Image may be NSFW.
Clik here to view.

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