[Geary] IMAP / gmail performance?

[Kristian Rink <kawazu428 gmail com>]

Folks;

I'm looking into geary because I like its UI and usability but
unfortunately I can't really use it at all right now as, having
configured two mail accounts (local corporate IMAP, personal GMail) the
app is effectively not usable, repeatedly locks up for minutes between
actually switching folders, ... . Is there any way to optimize or at
least debug what happens here? 

TIA and all the best,
Kristian