PC was running fine. Then I installed a game called Banished. Since installing that game, everything is fine while I'm playing it, but afterward, audio sounds like it has an overlay of static that starts softly and grows worse over time, eventually becoming intolerable. Also, videos play fine for a few minutes then the video and audio lose sync.
Win 10 (64)
AMD A10 with Radeon R7 on motherboard
The staticky sound is much worse when multitasking.
Is this an audio driver issue or graphics issue?