At first, as an audiophile, it was just hugely obnoxious - but then I realized it was also an issue on recordings made via my sound interfaces. This, to a home recordist, is more than just a serious problem, it's a deal-breaker.
After I got done grumbling about how Microsoft took a great thing (Windows 7) and "fixed it", I got down to business trying to figure out exactly what was causing this issue. I found out the glitch is very easy to isolate when listening to a study tone. I used a tone generator plugin in Reaper. The click happens about every 5-10 seconds... Never more than 12 seconds apart.
Next I used msconfig to pare down the suspect services.
|One of these services is it! Actually, it's MBAMService|
|Later I determined that MBAM website blocking seems to be more specifically tied to the issue.|
So of course, on one hand, I'm pretty happy. It means I don't have to reformat my computer and start all over. On the other hand, I do have ask the question, why was this never an issue until I started running Windows 8? I've been an MBAM user for many years. Clearly there is some kind of minor compatibility issue between MBAM and Windows 8. I wonder how long it will be before this is figured out. In the meantime, it looks like I'll have to remember to disable website blocking before I start a recording session.
Anyway, I hope this post saves someone who is experiencing a similar issue some time. Lord knows I found a TON of Google results for the keywords "Windows 8 audio click"... Mostly forum posts by people looking for help, and I saw very few resolutions. My bet is that a bunch of those are people running MBAM.