Hasta La Motion!

Alright, I’m going to need someone to enlighten me on this, because really, I’m baffled as to why this is happening.

So I have an intel workstation, 4 cores. Here is where the question lies:

Why, when hyper-threading is enabled, does Nuke respond and render slower?

I was rendering a script, with Hyper-threading on, and 8 threads on, the script took 2 hours to render. (I have a lot of stereo footage coming in).

Now, I turned hyper-threading off, and my render was cut down to 45 minutes. Not only that, but I even went in and added 2 more pieces of stereo footage, comped, and well.. the render time is still about half of what it was with HT enabled.

Has anyone else ran into this? I have the threads set to 8 in Nuke. I checked affinity in task manager, etc.

Is it just because the way Nuke’s scanline render work? Or what’s the deal?