Hi Titas
Most processes, if you google them, you will find reports that they are a virus or malware, this is rarely true, they are just trying to sell you their software to remove the 'virus'
Dax API is part of your Dolby Atmos installation, the best thing to do is totally uninstall that from your PC to see if your system settles down . . .
Then if you do want to run that software, download and install the latest version available . . .