The installer for VS2015 will install the Windows 8.1 SDK. If you have a later version of Visual Studio installed on the same system a Windows 10 SDK was probably installed with it.
Look for installed Windows 10 SDKs in Apps & Features or in Control Panel. If they exist you can then remove installed versions of the Windows Performance Toolkit. You probably don't want to completely uninstall the Windows 10 SDKs if you do have VS2017, VS2019 or VS2022 installed.