Download charts

What is considered a small vs. large area for download?

Recently I had to reinstall the whole CE on my iPad. I then proceeded to download the charts. After a few tries I reduced the area to just Puget Sound up to US/Canada border and not including west entrance to Juan de Fuca. This still does not downloads at all. The CE crashes in the middle of the download attempt. I tried 3 times and sent all crash reports.

Interestingly when using online charts on the same WiFi network, they get pulled in very smoothly.

Regards,
Maciek