[PiXeL01]

I’ve been looking at Hyperthreading for a while now as I’m planning to finally get over my prejudices against TMs and give such a character a go.

I was wondering about the effect on defense rolls actually, as I was thinking to stack up Diffuse Firewall, Derezz, and Puppeteer.
My question is, would the defense value change for each part of the Comflex Form, or remain static?

[kainite311]

I would assume it stays static, as all the effects happen at once. To my knowledge there is no "order" when hyperthreading, it's all instantaneous.

[Hobbes]

It's one roll to resolve, so Software + Resonance dice to Thread and each sub-form of the Thread has that many hits v the stated resistance (typically Willpower and Firewall), then all the effects resolve. 

Hyperthreading specifically states all the Complex forms in the Hyperthread are treated as a single Complex Form.  There is no MtG style order of resolution or anything like that.