I started experiencing this problem today with FF14. I didn't even think about it being the azeron stuff until i found this thread. i did this to 1 of the devices. i don't even know which because the device manager doesn't label them. but it said the device will stop working, should i be concerned with that? it doesn't seem to have affected it so far.You can attach logs here or email us on info@azeron.eu (include link for the forum thread) or pm them to me.
What you can do is disable the Consumer control device compliant with User Interface Devices in Device manager / Azeron.
See if the fps drops stop