Stitching clips INCREDIBLY slow - perhaps only stitch what is needed?

Hi All

I just got my Virb 360 after waiting a long time until a good deal came along.

I have a pretty good PC:

i7 7700K 4.2GHz 630 8MB Quad Core CPU
32GB DDR4 2400MHz Memory
2 * GTX 1070 GPU

but it is still taking an age to import a 30min clip from my Virb 360.

this is quite disappointing.

Especially as I am using my 360 as a cycling safety camera.

90% of the time I will have a 1 hour clip and I will only want about 4 minutes of it. I will have to wait to import the whole hour then cut it down to 3 minutes.

It would be great if I could "edit" the clip and select the portion that I want before importing and stitching the whole lot - that would save me LOADS of time.