Just follow post 1 to remove old drivers and clean-up the registry, then following the steps double click 'Install' to install the driver.
The reason for the steps is because residual drivers and registry data, can-will cause problems with current drivers.
You will be surprised how many have said about Ultra not working, then after TeamViewer, it was a case of old drivers.
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The Ultra pack I provide, is for non-Realtek devices, or where specific drivers are needed, such as laptops, or OEM configs.
If you have a mainstream laptop, you just follow post 1, there is nothing special to do, only for 3rd party devices.
For example, I install the DTS DCH driver, and APO4 is running, I can then use 'DTS Settings' to program also my GPU.
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The pack only contains DTS APO's, no Dolby, there is Neo-PC but it must be added and configured (not controlled by Realtek).
It is disabled because it uses expand technology, and the rear audio quality is not good, I use E-APO with APO4.
Here is an example of expand technology, which doesn't necessarily mix with spatial audio.
View attachment 236100
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If you need specs to help with making a decision over dual or single, this might help:
DTS Surround (aka DTS Audio): 6 channels, 24bit 48k, 1509kbps.
Dolby Digital Live: 6 channels, 16bit 48k, 640kbps.
Then its down to expand technology, or clone and spatial.