[cwtoyota]

I am using fusion 360 and when boring a hole fusion outputs a large number of very short straight lines instead of a G2 or G3.
Is there any way to get fusion to use G2's or G3's?

I don't think there's a way to do exactly what you want, but I'm not a Fusion 360 expert.
When I've asked before, I've been told I need to adjust the "smoothing" settings, etc. That doesn't make a G2 or G3 for a circular path, it turns small clumps of G1s into G2 or G3 where they fit.

In my case, the older Fanuc system I'm running cannot buffer enough blocks of G-Code for smooth operation at a reasonable cutting feed rate.
These older machines just can't handle the volume and rate of data coming from modern CAM software.

I program using some scripts I wrote that create G-Code from polyline curves in CAD. If I ever get that to a state worthy of sharing, I'll do so.