That shouldn’t really matter for asciicinema streaming which 0 effect on any kind of performance.
The 2 device setup for game streaming was born because of the heavy CPU usage of x264 encoding. So you could have a PC for the game only while the streamig PC takes the encoding load.
But even then nowadays a lot of people moved on from that since you can use your GPU for encoding (Nvidia NVENC) which almost has 0% overhead and providing the same or slightly worse quality. Really OBS x264 should be only used for offline video recording say for a Youtube video
The 2 device setup for game streaming was born because of the heavy CPU usage of x264 encoding. So you could have a PC for the game only while the streamig PC takes the encoding load.
But even then nowadays a lot of people moved on from that since you can use your GPU for encoding (Nvidia NVENC) which almost has 0% overhead and providing the same or slightly worse quality. Really OBS x264 should be only used for offline video recording say for a Youtube video