to one:
I just use the program NDI choose there Streaming Capture HX and set everything in the taskbar (at the icon next to the network icon).It sends everything I do on the first monitor to the second PC where I can use it with OBS )with NDI plugin), which I control with Touch Portal.
When you mention HX, then it makes more sense. You really can't tell the NDI plugin to use HX -- at least not yet anyway.
However, I still use OBS Studio in two cases anyway, simply because it makes more sense to me.
In my case, as a VTuber, I absolutely
have to use the NDI plugin within OBS Studio because I
need the ability to move an alpha channel over to my "studio PC" so I can overlay my character over the scene. This allows me to forego the usage of chroma-keying entirely since my main applications on the "VTuber PC", VTube Studio and T.I.T.S., to run either on Spout2 (VTube Studio) or with the ability to capture transparency (both apps) into the scene. I then use the BGRA format so I can then output an alpha-capable scene out the back of OBS Studio to my studio PC. However, this appears to have limited applicability in your case, but I figured I would put this here for others' benefit.
On the gaming side, I still capture with OBS Studio because it gives me an extreme measure of control over how things will work before the scene even exits out the back of that machine's OBS Studio. I can vary the audio capture volume, plus I can capture
only the game and not any unnecessary overlays, for example, Steam toasts, including and especially when friends start games or any of their messages to me. This is done via OBS Studio's built-in "game capture" plugin.
Furthermore, as of OBS Studio 28, it has a bundled plugin, along with a third-party plugin that works with OBS Studio 27, allow me to capture only the game's sound via a Windows 11 API that is present in recent releases of Windows 10, and not all other sounds the computer is emitting by using the audio device endpoint as the point of capture, which I find to be very-much-less-than-ideal.
However, all that said, I'd actually given thought to using the NDI capture program to capture any games, but I wanted the precision over what gets captured. NDI's apps doesn't want to capture specific windows and does not have the ability to capture apps like the "Game capture" OBS-bundled plugin does. This thus explains my rationale of using OBS Studio even when I'm not streaming to Twitch, but instead, to the next PC in the pipeline.
secondly:
When I tried yesterday with VBAN my microphone came totally distorted no matter what setting I used, is for me then also not usable. Have the program also not yet understood so...
Were you using the VBAN plugin for OBS Studio, the VBAN capabilities in Voicemeeter on either or both endpoints, or some combination of them? I use Voicemeeter because the capability is built-in and because I have to in order to move audio from my gaming PC (speaker and microphone) to the studio PC (Discord would run on this machine, which it needs to anyway as the Fugi Reactive Images system needs both the browser displaying my collaborators' PNGs, in this case, OBS Studio, to run on the same machine owing to socket-base IPC). When I'm not streaming, I'd do any voice chatting on my gaming PC.
As for not understanding a piece of software, you may have to mess with it a bit more so you can understand it. Just mess with it when you have some downtime so you can master it. Knowing how Voicemeeter works now allows me to make use of it not only in OBS Studio, but everyday computing usage. Besides, I've been using it long before ever getting into streaming as I do a lot of messing with audio. Practice practice practice is the key here.
Thirdly:
I want to transfer ingame sound and micro sound. If I set the audio to default output takes only the ingame sound. So without micro because that goes then wiederrum either only if I choose the default input or the micro. If there is another possibility I have not yet found. I can not tell the program that he should send both.
I'm assuming "micro sound" means "microphone sound". We Anglophones generally say "mic" or I say "mike" to mean microphone. I can only assume that English isn't your "mother tongue". I'm just wondering how you're working on having your microphone going into VBAN on one side and outputting to the other.
As for audio in general, it's too much work to do
just to get just the in-game sound going out a particular audio pipeline endpoint or a specific audio pipe to capture. Most games won't allow you, even via apps like Ear Trumpet (which is a great app any streamer shouldn't be without, by the by), won't allow you to reroute a given game's audio to a different device. Though just as important, it's a bear to make sure that certain sounds do
not make it to that pipe, though I still recommend the abovementioned Ear Trumpet for that if you can. It just makes far more sense to me to use OBS Studio to capture the game's video and the sound both directly from the app, rather than from OS-provided subsystems. Basically, the closer you can get to the app you're capturing, i.e. the less you can avoid touching audio pipeline endpoints, like device channels, the better. In my case the words "not at all" are the words of the day I prefer using. I only capture audio from devices solely as a last resort or when it makes more sense or is necessary to, e.g. a mike in the lattermost case.
Anyway, I hope that gives you some ideas as to why I do things the way I do things.
--Katt. =^.^=