Indeed, it very well may boil down to network differences which ultimately explain the wide range of comments and opinions regarding Tablo playback on the Roku.
I will be the first to admit that my home netwerk is complex. Although I avoid Wi-Fi connections unless I am forced to do so (for my Nest thermostats for example) where ethernet is not supported, I am entirely hardwired with RJ 45 connections every place. I have a huge amount of traffic, including numerous live streaming surveillance cameras, and all sorts of Internet connected IOT gadgets, seven Internet radios, Lutron home lighting, and streaming devices.
I personally like the Roku boxes, but only have issues with streamin Tablo playback.
I believe very strongly that the app written by Tablo for the Roku is faulty.
I do not think either the Roku player or operating system is at fault.
I do not think the Tablo box, hardware and firmware, is at fault.
The recently released update to version three of the Tablo App for Roku makes an obvious difference, and shows some significant improvement, especially in crashing.
For those of you who continue to comment that your specific configuration does not show the same problems, I will repeat again that software bugs are, in no way, necessarily going to affect all users. The problem is experienced only by those who have a configuration or environmental circumstances which stress the system in ways which were never tested in developing the software for release.
I will also add, for the benefit of those users who have not been long term Tablo customers, that this is not a new problem. It has been solved in years past by making necessary software changes to Tablo software. The most memorable occurrence of this freezing and rebooting issue took many months for Tablo to acknowledge, and then fix with a new release of software. I personally exchanged well over 100 messages for this specific problem, and ultimately wound up buying non- Roku players for my key locations since my wife and I and many other people who complained grew tired of having crashing and rebooting on a daily basis. I personally went to my Amazon review of Tablo and dropped my reading from four stars to one star based on the prolonged and dismissive attitude of Tablo combined with many months of frustration. (I subsequently updated my review again after the repair was released, but have never gone back to four stars based on the continuing eight year saga of many bugs affecting playback, program guide, remote access, phantom desktop icons, etc.