One of the big problems with cheap routers like the ones generally provided is that they are REALLY cheap and more often than not with streaming services its a question of DHCP not working properly. First thing to try is to set your box with a static IP.
Get into your modem and check the DHCP IP range, it will be something like 192.168.0.2 to 192.168.0.255
Change it to stop at 192.168.0.100, which gives you 99 DHCP addresses for general stuff and 154 static ones.
Restart the router (to shove off DHCP devices) and set the TiVO to (eg) 192.168.0.101
So after 2 days of trying, it still seems to happen.
On Saturday I changed my box IP to be outside of the DHCP range as suggested (Still on the same netwok of course)
I managed to watch some of Netflix, during the day, but during the evening as I was watching something else the dreaded 25% reload occurred again, and the flashing light
Yesterday however we managed to watch sth without interruption not sure why, it seems inconsistent and random
Any other suggestion ? I see Netflix released a new box end of Nov (my box is 2 yrs old). Would getting this new box sort it
Also maybe worth mentionning I have Netflix apps on a laptop, a PS4 and a few various devices and only the Tivo box does this. Assuming this could be a network issue poor dhcp etc should not all devices fail the same randomly?
Ah, no then its most likely to be a TiVO box problem. Maybe it has difficulty accesing its own buffer. I don't own such a box but it may be worth looking around if there is a way to completely wipe and reinstall the Operating System.