Not to beat a dead horse on this, but have tested your DPC latency yet? With your specs, you should be have tons of headroom on your machine, and it is probably a misbehaving driver causing DPC spikes.
Not to beat a dead horse on this, but have tested your DPC latency yet? With your specs, you should be have tons of headroom on your machine, and it is probably a misbehaving driver causing DPC spikes.