snr is at 44%?
VM cable not connected properly, power levels in router are miles out or the splitter is a duffer
what name on th splitter?
what type/length of cables being used?
if you want to check the power levels, log into router and post the downstram data here
on the bottom of the router is a 'settings password'
open a browser window on laptop and type 192.168.0.1, click enter
use that password to login to the router
click Advanced settings on the left, then tools>network status
this opens a new page, click Downstream tab at the top and it'll show all the data in a list