4x new Realtek codec to try out, too new to be WHQL but are signed by Realtek so will install with no trickery
Feedback encouraged
6.0.1.7469 Lenovo 362MB
6.0.1.7471 Realtek 110MB
6.0.1.7472 Compal 364MB
6.0.1.7473 Realtek 291MB
Grab them from here