The issues that were addressed had to do with large libraries loading from Channels DVR Server, of which non dvr users do not even have.
Channels for HDHomeRun, the app you're using has practically no network requests or parsing involved except the guide data that is received from Silicon Dust.
If you're seeing weird slow downs without using the DVR service, please submit diagnostics after you see them, and email us at support@getchannels.com along with your HDHomeRun deviceID and a description of what your experience was.