Nostalrius Begins - Quality wow vanilla realm (1.12)

Hey guys, I have been playing on the server for a week now and just started experiencing this problem. After an hour or so of playing I get this weird video stuttering where every 2 seconds there is a slight pause. The video will show more but that is how I describe it. I assume it is related to addon memory usage because that is the only thing I can think of. I have played around with script memory (currently set to 72MB) and still have this issue. The max I ever had is 60MB running but usually the memory usage is only 45-50MB. Can anyone think of anything else? I am at a loss.
Sorry the video is small and pretty low quality, but it still shows the problem quite well.
https://youtu.be/ZzQfUzSK1mY
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For those interested PC specs:
i5 6600K - cpu
H100i GTX - Liquid CPU Cooler
AMD Radeon R9 390 - gpu
16 DDR4 RAM 2400mhz - ram
Corsair 760D - case
Samsung 850 EVO SSD 500GB
7200RPM HDD 1TB
Asus Z170 AR Mobo
Corsair RM 1000x PSU
BenQ 1440p 144hz Free-Sync Monitor

If wanted I can also link what addons I have running.

I have used a lot more in retail versions in the past and never had a problem like this, I am currently looking through the files to see if anything needs to be changed in there or something.

getting the same thing here bud, disabling all sound solves it.

disco wrote:getting the same thing here bud, disabling all sound solves it.

Tried this just now, didn't help. I unchecked every box and moved all the sliders to 0.

Having the same issue, though i just installed postal addon so I'll try to disable and check, pc specs is i7 4790k, 16gb ram, gtx 980ti, pg279q 165hz playing game on max settings with sound and at 2560x1440 resolution. I'll post back when i disable some add-ons.

well i found out my issue was a bad audio driver. download latencymon and let it run while you have wow open. it will give you an idea of whats going on.