I have Spectrum cable as my ISP and can run their service while continuously streaming. The downside is that I am required to have a set top channel selector box. When I switch to using a ROKU device, I get the 4 hour bandwidth limit regardless of any ROKU setting to the contrary. I suspect my ISP is responsible for imposing that restriction by virtue of the changing device MAC identity.
More insight... I took a trial test with a fiber optic cable provider recently to compare it to Spectrum cable. I still used the Spectrum APP but it limits the number of screening devices to three while using a non-Spectrum ISP with the ROKU device. It also removes some of the local channels that I can get when using Spectrum as my ISP. That goes to show that the ISP's are not likely to lift those restriction since it's not in their best interest financially.
Fool that I am, I'll stay with the Spectrum cable ISP and the ROKU devices (have 5 TV's) for the time being but fools can sometimes be very ingenious and I'll be using all the grey matter I have to circumvent these inconveniences. The workable ways I have come up with so far are kludges but I'm still hopeful.
