IT IS A TUTORIAL
I reinstalled my windows and dts was gone. no internet tutorials were working, so I solved it myself.
it has many steps, but I'll leave it very detailed so there's no mistake. it's a simple process.
1. go to acer website and install realtek audio driver (don't delete the folder later, you will need it)
2. after installation go back to the acer website and install the zip files: DTS Utility (DTS Console) and DTS Utility (Sound) and extract
3. open DTS Sound and run "Setup_APP", then open DTS Console and run "Setup_APP" as well, and restart your computer. Now DTS Sound Unbound is installed and licensed, and by right clicking on volume you can see DTS in spatial sound, but still can't access the DTS:x Ultra application
4. In the DTS Sound folder, install all APPX files (such as net framework). if the computer indicates that a more current version is already installed, cancel and use the most current version. The file "d9e40f5ee2e34ae4bf727c73a546640d" will not be installed, it is already the DTS:x Ultra, but it will say that a driver is missing (error 0x80073cfd), let's install it now. (don't close this folder yet)
5. In the Realtek folder go to Win64>ThirdParty and click on "Install_DTSAPO4x_Acer_DTSX_Ultra". Try installing the file "d9e40f5ee2e34ae4bf727c73a546640d" from the DPS Sound folder. If installing, it may open that DTS:x Ultra is working. If not, as was my case, go to step 6
6. Still in the Realtek folder (in ThirdParty), there are several DTS(...) folders, enter them one by one. on each one (not all) you will have a single INF file (a white paper with a gear underneath). On these INF files, right click and then click install. Wait for the completion message before installing the next one. There are folders that will have APPX files, DO NOT install them again. There is another folder that has several folders named "acer" DON'T touch them, just install the INF file below.
7. Now we have installed the driver that showed the error. Go back in the DTS Sound folder and install the APPX file called "d9e40f5ee2e34ae4bf727c73a546640d". The DTS:x Ultra application will be installed. Restart the computer. Okay, just use it.
//Edited the content to add model name.
