I know that it is a very old thread but since I know that there is still a LOT of people out there suffering with this plague here we go.
There is some time since I posted here for the last time. The problem still haunted me for a long time and I was convinced that the only solution for me would be to set up a dedicated system for play music (based on a thin PC running Linux or XP) but then today I bumped with this article pointing a few "methods" that supposedly could solve the DPC latency issue...
Fix: High DPC Latency on Windows 10 - Appuals.com
I confess that I am completely skeptical about any of those online solutions since I have tried a LOT of them and nothing seemed to cause any positive effect. However, what wrong could happened? So I decided to give it a shot.
The two suggested methods I tried on my computer (and that I didn't find so far in any of the other articles) were the mentioned in the topics
number 3 (disable the Energy Efficient Ethernet on my network adapter) and
number 7 (Disable the TCP/IPv6).
OK, after to apply both onto my system, I am still not 100% sure that it will solve my issue for good, but
so far it seemed to have made a HUGE difference. Oddly the Resplendence Latency Monitor still says that my system may suffer with somewhat high execution time of a couple DPC routines (in my case the culprits are USBPORT.SYS and TCPIP.SYS) regardless the graphic red bars looks too much smaller than before.
What really matters is that in this right moment I am typing in this post I am performing a download using the totality of my bandwidth through WiFi while I am listening to a mp3 album and guess what: NO ONE dropout, click or pop.
I will keep monitoring the computer behavior and will report if I consider that it solved (or not) my problem definitively. I hope that it helps someone else.
PS: It's funny that I managed to figure it out just when MS announced that W7 is officially abandoned. I don't intend to move to a newest version though while everything I run still works fine on Seven.
