Audio volume per application doesn't remember audio levels per audio device, help!

So the problem is that if I select my speakers and set any application to 100% volume, and then switch to my headphones and set it to 30% volume, then the speakers are also on 30%. I want it to remember the volume settings per device. Is there anything I can do or should this be suggested as a feature? Thanks a lot in advance.

Also another audio problem that I would like to have fixed, is that my TV and my monitor, which both are plugged in via display port, are not getting recognized as audio devices. Any help is appreciated. I am new to Linux btw.

Ok the monitors not being recognized was just that it grouped together all HDMI / DP outputs, so I had to switch it to Pro Audio and then they were seperate.