1055t on a Biostar AT970XE mobo that I've been mildly overclocking. I actually have had it on stock settings though for about 24hrs. I just noticed in CPU-Z that my frequency had dropped from about 3.6 DOWN TO 960mhz!!!
Then I noticed that sometimes it jumps back to 3.6 for a couple secs, then back to 960mhz!
As we speak it seems to be stuck back at 960mhz.
I've gone into my BIOS and everything seems normal and set up the way I normally have it.
Play a game or do something CPU intensive and check CPU-Z again. The chip is probably clocking down to save energy. However, if you start a game and the clocks don't jump back up to 3.6GHz, then something is wrong.