WiFi (very strange) Issue - RC

Hi. Sorry for my poor English first.

Please see the video first…

The situation:

  • WiFi bundle (TP-LINK TL-WN725N v. 2) connected to the Raspberry Pi (v. B +)
  • OSMC installed without any problem (no errors in the logs)
  • WiFi is connected properly to the network with DHCP (as you can see at the beginning of the video - sorry but I set the interface language in Italian)
  • When I enter the menu: Video → Add Video … → At this point the connection goes crazy. (no ping response or 500 / 10000ms ping respone time - at 0:30 seconds in the video)

Any suggestions? Others of you have this problem?

Have a nice one.
Thank You.

p.s.: with Raspbmc works perfectly - very stable connection and low ping (2/3ms)