You don't have an Acer Recovery USB and did a fresh install of Windows 10, and you open up Waves | MaxxAudio and it tells you your device isn' t supported. -_-
WTF Waves? Here's the issue, Waves expects
Realtek Audio Version 6.0.1.8622 [1/22/2019], but for whatever reason, the initial drivers that are dropped onto your device are
6.0.1.8597 [12/18/2018].
That version is in fact what is listed on the support page for the
PT515-51. I mean, if you RTFD, that's the driver version that you're "supposed" to drop in your box.
However, that will most likely tell your Waves install to hate your PT515-51. To circumvent this, I asked Powershell for some help.
Sidebar - You may be able to right-click on the Realtek(R) Audio entry in the image below (after the code block), and select "Update Driver" and then follow the rest of the steps if the codez aren't your thing. I didn't try that method, but I suspect it will work.Now for the fun part! Open a Powershell window as
ADMIN, or this script will bomb out when you execute it, much like Waves does with its outdated drivers.

# PS | Administrative Shell:
$Criteria = "IsInstalled=0 and Type='Software'"
$Searcher = New-Object -ComObject Microsoft.Update.Searcher
$SearchResult = $Searcher.Search($Criteria).Updates
$Session = New-Object -ComObject Microsoft.Update.Session
$Downloader = $Session.CreateUpdateDownloader()
$Downloader.Updates = $SearchResult
$Downloader.Download()
$Installer = New-Object -ComObject Microsoft.Update.Installer
$Installer.Updates = $SearchResult
$Result = $Installer.Install()
If ($Result.rebootRequired) { Restart-Computer }
Bonus - If you have outdated drivers, that should spruce them up a bit. Next, open Device Manager and do this:
- Sounds, video and game controllers
- Right click on Realtek(R) Audio > Browse my computer for drivers
- Let me pick from a list of available drivers on my computer
- Click Next
- Select Realtek Audio Version 6.0.1.8622 [1/22/2019]

Now perform these steps:
- Download and copy all drivers from Acer website to a separate hard disk and unzip the files.
- After that go to the folder "Audio_Waves_1.0.31.0_W10x64_A" and install the following files by double clicking on them, in the following order:
- Microsoft.NET.Native.Framework.1.3_1.3.24201.0_x64__8wekyb3d8bbwe.appx
- Microsoft.NET.Native.Runtime.1.4_1.4.24201.0_x64__8wekyb3d8bbwe.appx
- 4c1aab4abaaa4f81aac14cc4e712bf57.appxbundle (Everything before the ".appxbundle" is a unique identifier, it will be different on your system - AKA "GUID" )
- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ DO NOT LOOK THIS STRING, IT WILL BE DIFFERENT ON YOUR BOX, just look for the pattern "xxxxxxxxxxxxxxxxxx.appxbundle"
- The above steps will install Wave MaxxAudio app with the proper license.
With any luck, your Waves will work now Fam. Only took me a year to figure it out.