Hi,
I contacted the support team and I will receive a separate router for gaming, apart from the Horizon that will remain for TV.
I also was notified that there is an option for the “standby power usage” in the Horizon menu (settings - horizon box) that has to be set up as “high”, but the most safest option was to separate the TV from the gaming functions.
(See the manual, http://www.upc-cablecom.ch/content/dam/www-upc-cablecom-ch/Support/manuals/en/hrz/upc-horizon-user-manual.pdf, page 55).
I guess that how to set it up will be clarified on the received router, or if not, will call the support hotline.
Thanks for the quick turnaround and response.
Best,
Jose