The requirement of pinning Volume mixer to the taskbar is currently not available in Windows 10. Many of them will just be very quiet, and not completely off. Normally I have to go to sound settings to reset the values to just get them all at 100%, but sometimes I find that they don't stay at that level.
Google Chrome is also affected by this issue, I just have it turned up. I attached a picture of the Volume Mixer when I start up my PC. I believe it is all driver related, but I would like to have a working mic and levels that don't change sporadically. I did uninstall a Realtek driver and it resolved the issue, but my microphone was producing nonstop static. It has stayed the same after reinstalling. I have tried doing a clean install of Realtek, and even downloading the audio drivers from my motherboard's suggested drivers.
Sometimes when I have a game open or am using Discord, the volume levels will all change between two set levels randomly and very frequently. Lately, I noticed that the individual volume levels for different applications will change whenever I boot up my PC, wake it up from sleep, or maybe even close some games.