Trying to make CoC Eye of Winter with Return...

Not using Arcanist Brand for this, so its max range is default rather than shortened.

I'm returning projectiles with Nimis, triggering with both Cospri and also CoC in chest (Cyclone). I've tried the build with 200% increased projectile speed and 15% more projectile speed, and it's still a lot of missing DPS potential (most projectiles don't return all the way to me unless there's walls nearby, but I want them all to reach me in an open area).

I recently came across this:

https://www.poewiki.net/wiki/Vengeant_Cascade

I thought that I could have 0% increased speed, and this would make them all come back to me. But it looks like NONE of them even begin to Return. So that leads me to believe that they are using up 100% of their DISTANCE just getting to their natural end point when they have +0% speed (100% of default speed). So I guess I'm to assume +100% speed is required for a projectile (maybe only spells?) to go all the way to its natural distance, then have remaining distance left over to be able to Return in the first place?

If that's the case... is it even possible to have Eye of Winter fully utilize Return while doing CoC Cyclone? Because every bit of +speed is making the Eye move farther away, when the projectiles at the end of the Eye's travel still need to go out even farther, before trying to come back to me. Even with access to +150% speed on the Return ONLY, I'm not sure this is doable.

Thoughts?