High latency, High CPU Interrupts per second 60K/Second causing FPS spikes in games

Question

CPU Profiling Screenshot:

LatencyMon

Battlefield Screenshot:

Processes:

1.3ms of execution time on the NVIDIA Windows Kernal?:

I'm not familiar with the concept of Interrpts/sec, but after some research online. 60K interrupts/sec on the cpu seems like a very bad amount.

The main symptom is that when I play Battlefield 4 the CPU spikes randomly causing FPS spikes.

Answer 1

Those are probably DPCs (deferred procedure calls). Run this program to check.

http://www.thesycon.de/deu/latency_check.shtml

If you have a lot of red spikes, then you have a driver problem. The program may give you some hints on the bottom where to look.

Answer 2

• install a stable nvidia driver
• close background programs (the programs which access the disk are your first target)
• select a performance power profile
• see if windows update installed any new drivers recently. uninstall any unusual, "incompatible" or beta drivers. find a safe(stable, likely to work) driver provided by OEM for all suspicious devices.(network, gpu are your first few targets)
• check your antivirus if it's running a scan
• check for conflicting antivirus software(make sure you are not running two at the same time)
• latency mon said highest running cyclpe was tcp-ip related. check your network adapters drivers. roll back to drivers provided by OEM if you "feel it"