Lag spikes on new gaming PC

Support
#1

Ordered and received a new Novatech PC today - stats are as follows:

6th Gen Quad Core i7 6700 3.4GHz
Corsair Vengeance 16gb DDR4 PC4-19200 2400MHz Dual Channel
PALiT GeForce GTX 950 StormX OC 2GB GDDR5
ASUS H110M-A Intel H110 (Socket 1151) Mobo
120GB SSD
1TB SATA

Fresh install of windows 8.1
Installed latest drivers for gfx card
Using wired ethernet connection

Installed World of Warcraft and CS:GO, experiencing random lag spikes (latency, not FPS) at various intervals. Tried the usual reboot, reboot router, tried ipconfig /release then /renew in cmd, still having same issues. Any thoughts appreciated

#2

TBH, sounds like jitter, how bad are the spikes? 400ms or worse? How frequent are they as well? daily, hourly?

Much more likely to be ISP based than a problem in your setup although that’s not out of the question…

#3

The spikes are essentially mini timeouts. Longer than 1000ms. I thought ISP related, but playing CS:GO on a laptop through the same connection worked fine.

They were happening approx one per minute.

#4

Can be caused by very slight network or disk issues, but also drivers are a favourite.
Might be worth taking a look a the system event log, but also try running a DPC Latency Checker:
This is a very basic one: http://www.thesycon.de/deu/latency_check.shtml
This one is more advance (and far more useful). It should show you which driver is causing an issue (if the issue is indeed DPC latency): http://www.resplendence.com/latencymon
Once you know which driver may be causing an issue you can try reinstall or update it.