Hrm… It’s been quite a while since we did a firmware update but we did update the iOS apps in September of last year: NEW - Tablo iOS App Update (v. 1.8.0)
We aren’t able to reproduce the issue here but the oldest hardware we have is a 2nd generation Apple TV.
It’s possible that the issue you’re running into could be hardware-related.
In general, we don’t recommend using AirPlay or Chromecast for primary viewing so it may be time to invest in a new streaming device.
We realize a new Apple TV is a bit of a budget buster, but there are many Roku or Amazon Fire TV devices that are much more affordable: