I said this before, I'll repeat it again. Last time.
Since Cepi enabled pushnames, your contacts have to be parsed more detailed.
If you have a huge phonebook than this will freeze the app.
Unfortunately, the way it's currently implemented is synchronous in Python Mobiliy Contact API.
That is not good.

We are trying to optimize it or make it asynchronous. In translation, faster and smoother. This is top priority. Cepi already did some huge steps towards that goal.

So, either be patient until we all fix it and test or use any build you want/find/works for you.

Cheers

P.S. You had no client at all 3 months ago. 3 guys are working on something whole teams work for years. Get real. Help us with proper logs ( thanks everybody that did! ), don't spam us with petty problems.