One of the view is constantly refreshing (a SeekBar for music progress)
When I try to make a dump, I got this error: RuntimeError: The views are being refreshed too frequently to dump.
Is it possible to freeze the app while the dump is not finished, or something similar?
This is a uiautomator limitation. You may try using ViewServer as the backend as it works in most cases, however you would need a rooted device or access to the application source code as described in https://github.com/dtmilano/AndroidViewClient/wiki#select-the-correct-implementation.