Hmmm.
Maybe it doesn’t work that way on a dual tuner model.
It definitely works that way on my quad.
Could also be the firmware version.
Mine’s v2.2.11 Beta 4
I didn’t notice it in v2.2.10, and below, but I wasn’t looking for it, either.
Here’s a quote from a Support PM to me:
For now, think of it this way. 720p channel = 60FPS bitrate requires 2
tuners. If this is the last available tuner, you won’t get 60 FPS, and
instead it will transcode to 30FPS. This falls in line with the tests
you ran above.