You usually need to install Intel SST first, reset, then Realtek Audio second.
Realtek High-Definition Audio Driver Vulnerability - Lenovo Support realtek alc3287 driver
A frequent complaint regarding this driver is low microphone volume. The ALC3287 often powers laptop microphone arrays. If the proprietary driver isn't installed correctly, the "Smart Audio" features that boost voice volume don't load, leaving you sounding distant on Zoom or Teams calls. You usually need to install Intel SST first,
