TL;DR The current 8-9 mbps bitrate the Coment uses is not "Ultra-High" bandwidth, it's less than 1% of what its gigabit port would be capable of and too low to properly display animated content (let alone playing videos) even at 1440p60.
It makes sense to have the different quality presets, which affect the bitrate from the reading in the status bar (I don't know whether it also affects encoder quality presets). Especially in limited bandwidth scenarios like when accessing your remote device from an overloaded hotel Wifi or from a rural remote location with a poor mobile connection I want to be able to set this to low values.
But if we have a setting that is called "Ultra-High" and the device has a gigabit port, why is the maximum I see when using it on LAN around 8,000 kbps with rare peaks to 9,000? To put things into perspective: 8,000 kbps is the unoffocial limit the live streaming service Twitch has been imposing on its content creators for a decade now, and received lots of criticism for this limit being too low to even allow good quality on 1080p60 in some scenarios.
For live streaming on the Internet.
For entertainment only, where a bit of screen clarity lost wouldn't do a lot of harm.
So, how come this is also my limit when accessing my Mac Mini on my local gigabit network, meaning it uses less than 1% of the bandwidth the gigabit port the Coment comes with (and the majority of home networks today support just fine) could provide?
(Windows Task Manager also shows around 9 mbps so it's not a wrong reading on the GLVM client)
It's true that for desktop use with mostly static content this would be sufficient nevertheless. But especially on a Mac, people might do stuff with animated media, and even the macOS animated login screen I use is looking blocky because of insufficient bandwidth. And personally I am using this machine to compile Mac stuff that works with video content, which I'd also like to test there after compiling. But watching any kind of video content at 1440p60 with that bitrate is...unpleasant to say the least.
I would be surprised if this is due to a hardware limitation. I am not asking to use a higher encoder preset (which would need more processing power), it doesn't even need a high quality one given enough bandwidth.
Even "High" should already be at 30,000 kbps in my opinion, which is what YouTube recommends for H.264 at 4K30 (and the Coment doesn't seem to adapt the bitrate to the configured resolution so I am assuming the highest it's capable of), again, for streaming through the Internet, not for my local network
If this needs even more perspective, for wireless VR with the popular software Virtual Desktop many people are using 200-500 mbps with H.264 - through Wifi! I don't get how "Ultra-High" on the Comet is using just 9!
Please, make the "Ultra" setting truly be "Ultra" or give it a different name. Even given that of course we don't want to saturate the full gigabit network with only the KVM data, make it at least be around 50-100 mbps, it's called "Ultra" so people should expect this to push through some serious bandwidth (if you want to call something "serious" that home networks had 20+ years ago).