We have an RV too and use starlink when camping. But we did go to a very small (less than 25 sites) near Helen, GA. not long ago that had 2.4 and 5 ghz that was fast and we had no problems streaming with no buffering but that’s the only one out of many we have been to.
Update to this older thread …
I have been experimenting with watching Tablo remotely on my iPhone via direct Teleport VPN back to my UDM Pro Max with mixed results while in Florida on holiday. Biggest issue is getting enough bandwidth either over cell (preferably 5G) or hotel wifi. Either way, I can get the Tablo to come up, but as soon as I select something to watch I get a couple of seconds of feed, then freeze, then another couple of seconds of feed. Basically unwatchable.
I have pretty good cell 5G at the house, and have been able to get a reasonably stable Tablo feed to my iPhone over VPN (all from my back patio, which is silly I know), but this proves it can work that way.
I also just acquired a Unifi Travel Router, but I forgot to bring it on this trip. I have been able to connect it via usb-c to my iPhone at home with wifi on the iPhone turned off (so this creates a 5G cell iPhone WAN connection), and then connect my iPad to the UTR wifi network, and I can get Tablo to work on the iPad that way. Again, sort of proof that it can work.
I’ll have to bring the UTR next trip and play around a bit more to see if I can somehow watch Tablo in a more “real” remote way. So far, no joy.
Update …
We are out on the road for our summer RV trip. I have been experimenting further with using the UniFi Teleport VPN to stream from our home Tablo. My testing includes both direct access via iOS devices, as well as indirect access using the UniFi Travel Router. My results so far are not promising.
My first attempts using limited RV park wifi bandwidth, as well as limited (LTE) cell service were non-starters. Wifi directly with an iOS device vs indirect using the travel router made no difference. No bandwidth is a deal breaker. No surprise.
I think someone mentioned using the travel router tethered via usb-c to an iOS device over cell network would work. My previous home testing already proved this approach to be a non-starter, at least with my Verizon unlimited 5G plan. Verizon treats this config exactly the same as a wifi hotspot. This means they immediately throttle bandwidth as soon as they detect streaming. Again, unusable.
I finally “gave in” and bought a Starlink Mini Kit. Very easy setup and config. For $80 you get 1 month of roaming service with 300GB of high speed data. This thing immediately gave me nearly 200mbps download speeds in the RV park here in Anacortes, WA. Easy peasy.
Back to the travel router and trying to pull from the home Tablo …
My first attempts were from my iPhone 15 Pro via Teleport VPN. No joy. Now the UDM firewall started blocking access to the Tablo as a “network intrusion attempt”. Really. Then I tried with the travel router. Took me a while to get the travel router to fully connect back to the UDM. Sigh. Same problem with intrusion protection getting in the way.
After several Google searches (most of which returned incorrect info), I figured out how to set the Tablo to a fixed IP (through the router), and then put a rule in the firewall to allow traffic to this IP from the Teleport VPN IP range. Essentially, allow 192.168.1.xx (Tablo IP) to communicate with the Teleport VPN IP range 192.168.2.0/24. Bam! I was able to access the Tablo!
I was able to do so directly via my iOS devices (direct Teleport VPN via “invite link”), as well as indirectly via the travel router (which essentially creates an automatic Teleport VPN connection). All good, right?
Sadly, despite speed tests indicating plenty of bandwidth through the Teleport VPN, streaming from the Tablo stops and buffers every 10-20 seconds. Speed tests indicate 100+mbps transfer speeds through the VPN, but apparently something still causes buffering in the video stream. Foiled again.
As far as the UniFi Travel Router is concerned, I don’t see it providing any advantage over a direct Teleport VPN connection in terms of performance. I guess the only real use case for this thing is traveling with multiple people and/or devices and simplifying connecting and security (via wifi router, extending home network and credentials, and VPN). But, you still need considerable network bandwidth in your remote location to get any useful performance.
As far as remote viewing of a home network Tablo, I haven’t skinned that cat yet. 
Thanks for the detailed update. I’m interested in using it to secure my devices while on the road, not necessarily for Teleport or VPN. It should be fine for this, no? I already have a UDR7 and some Unifi AP’s.
I think this is the real issue. Looks like the Teleport VPN is killing bandwidth and latency sort of randomly …
I think it will work for your use case. I just wonder if bandwidth will be an issue, even for less demanding applications than streaming.