There are a couple factors which can be giving you lagy playback.You don't specify your bit rate or codec. If you are editing a processor intensive codec like h.264 (not a good idea) -the processor could start to be a bottleneck. If you are editing a less compressed format like ProRes your drive or RAM can start to become the bottleneck. Since that is the ...
There are two key ways to deal with the inevitable latency of live video from the other side of the world:
Ignore the video, at least for talent or guest queuing purposes. The person is fed mix-minus audio through their IFB. Since it is just audio, and historically was sent over a POTS telephone line, it can have virtually unnoticeable latency to the viewer....
Something that isn't mentioned, but has a direct impact on performance obviously would be what effects (even fixed effects like motion & opacity) are applied on the footage while trying to cut.
Other things to consider (some mentioned before, some not), in no particular order:
Overall effects applied (including color correction).
The number of non-...
When I first started doing this, I always thought it was better to give them "clean" audio as well. I've since figured out that they want to hear themselves. Also they want to hear each other, so really you do not want a separate feed for them.
Depending on what you are broadcasting, you may not even need the sound from the event.
The only issue you're ...
Like much with technology (and life), it depends. You didn't specify what software, protocol, or codec you are streaming with, so there are quite a few variables.
Will the bit rate drop?
If you are using a constant bit rate (CBR) codec, no it will not. As the name implies, the bit rate is always the same regardless of the content.
If you are using a ...
so all that is captured in the live video stream is a red light bulb
and a black background
No. You can't get black background. You will get any possible type of noises, many shadows and all kinds artifacts of camera's matrix.
will the new bitrate be less than X?
No. As GoPro writes constant bitrate (CBR)
No. As new noises can require even more ...
Go to Preferences, the click on the MIDI/Sync tab.
Open up one of your MIDI ports, and you will see the MIDI Clock Sync Delay.
Mess with that.
If that doesn't do it, then Driver Error Compensation, under Latency in the Audio tab.