I'm on .19 and while substreams seem to work I have noticed two problems. I have a clone of a T5442TM-AS. The main stream runs at 15FPS/15iframe with an 8192 CBR. The substream runs at 15FPS/15iframe with a 1024 CBR. If I try to play an alert from the clone the BI console crashes. I have other cloned cameras, 2MP, and have no problem with those.
The other thing I notice is that motion detection just isn't what it should be, or was, prior to enabling substreams. I just went out and came back, driving up and down the driveway to do so. Two clones should have caught that movement since I drive an F150 Super Crew. One clone, an HFW4231E-S 2MP, did catch the exit but missed the entrance and the 5442 missed both. The 4231 is set up, basically, the same way as the 5442 in terms of streaming. I've been fooling with the detection zones and sensitivity trying to get things working, as it did prior to substreams, but haven't had any luck.
I know, the cure is revert back and shut down substreams but I like the reduced load on the BI machine.