Regarding the first log:
The DPCs here are really low (less than 5% per CPU) and they are not what's causing these small audio glitches you mentioned. The problem is that Chrome is talking almost all CPU time, resulting into 100% CPU usage, which cause audio glitches. To be more specific, I see that
pepflashplayer.dll component is responsible for that CPU usage inside Chrome. This can probably be explain by the fact that you are using a built-in GPU, which does not support hardware video decoding inside Flash, putting all the load to the CPU.
Regarding the second log:
The DPCs seem to be higher than usually, above 5% per CPU with a spike to 10% for some time. Not surprisingly,
nvlddmkm.sys driver is behind this. There's not really much I can suggest to resolve this apart from making sure you have the
latest drivers released last month and maybe trying to use Nvidia Control Panel to tweak some settings (like choosing performance instead of quality). Anyhow, since I said earlier, if you had issues with this card since the beginning, it's likely it might be a hardware issue.
