Originally posted by: semaj1286
I'm hoping someone can shed some light on my issue and if it even relates to the one discussed in this thread. I use Gigabyte's GA-MA78GM-S2H motherboard, version 1.0. I'm currently on BIOS F5 which was just released recently. I've been trying to figure out the audio/video stuttering that I've been seeing randomly (mostly apparent while gaming).
The easiest way for me to get the issue to occur is to simply load Half-Life 2 or Team Fortress 2 and strafe back and forth. I can see the FPS spike occur and occasionally the audio will stutter with it.
Finally after searching forever across Google and forums I came across that DPC Latency Checker program. While I'm even typing this message the DPC Latency Checker is spiking into the 50,000us+ range. If I leave the computer sitting without typing or anything it won't spike over 200us. From what I've read 50,000+ is pretty insane, but I really have no idea how to go about fixing it or if it's the same issue you all are dealing with. I put in a ticket on Gigabyte's site and PM'ed GigabyteColin on here as well thinking and hoping that's my issue.
I was wondering cactusdog since you said "There are some problems with high DPC latency on most Gigabyte boards released since P35 upto X38/X48. Some people have the problem and dont know it. " if you know if my motherboard is affected by this issue or if it sounds like I have the same issue?
Try to separate latencies contributed by lousy software/driver from hardware latency problem.
One of the best way is multiple OSs, when it's pure hardware latency problem, it'll show up on all OS.
Example of software/driver contributed DPC latency spikes in XP --> Using windows managed wireless connection manager would cause a huge DPC spike every 64 seconds with XP_SP3.