Lag Or Delay In Live Video Viewing?

Let me preface this question by saying that this is my first attempt at designing/setting-up a custom video system. I also do not expect a complete solution since I am a firm believer in solving things on your own. With that said, I would appreciate some input on this issue.

I set-up a simple test system running off a custom PC I built (i7 based) & a PoE Cisco 300 series switch and two Hikvision dome ip cameras. I installed a trial version of HD Witness (actually Digital Watchdog version) and for now just using the software for live viewing to play around with the system. Everything is set-up & works great except for a ~1/2 second lag or delay from the movement occurring in the FoV to the image on the screen (live viewing only). I've searched IPVM for articles/discussions on this matter, but cannot pinpoint the issue.

First, I'd like to ask if this time lag in live viewing is normal? (system not in record mode) If this is not normal, I would love any suggestions on possible directions to focus my research/training.

So not to bore you, I limited the amount of details, but will be more than happy to supply whatever info needed.

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