Reset DHCP cache for Asus Memo Pad HD7 'Avoided due to poor connection'
I faced the same problem when using my Asus MemoPad HD7. For home connection a static IP worked fine, however this was not acceptable.
I did a bit of research and found out it should be possible after gaining root access to the device to delete the corresponding cache file.

As I needed a fast solution I just did a factory reset of the Pad, which resolved the issue for me.