Can anyone please post some screenshots of the epix 2 GPS (only GPS L1, not All Systems and/or Multifrequency) tracks vs fēnix 6 series?

I hope you don't mind, but I exported your tracks and overlaid them for easier comparison. Green is Epix, red is F6.

Closer view of the tracks through the forest....

And finally the same track with EPIX and All system + multiband enabled:

www.strava.com/.../6588759654

Wich mode please?

1sec or auto ?

1 sec

almost the same distance as GPS only confirming allready confirmed F6 is underreporting...

edit..

And what is even more impressive is a quick glance into the activities page, strava shows the same elevation changes on EPIX to the meter, and F6 is all over the place (as I got used to). 

I must say that Epix is much better that Garmin 945 (which was better that F6:) even in multiband disabled. I'm very impressed and now I can see again great looking tracks first time since I had Polar V800

Thanks for the overlay. This helps with jumping back and forth. I was surprised that DCR never compared the f7/epix with the f6 in his testing. I know he normally rocks a 745 and that was what was in the test sets… but I think most people digging into this level of detail with the f7/epix are people with familiarity with f6.

Despite Garmin advising to soak the GPS, it looks like the problem all along was the Sony chipset, not user error or the orientation of the watch when running.

Looks like it, It remains to be tested thoroughly, but I am little disappointed with garmins silence in that regard, although I find this to be theirs go to behavior when difficult questions occur.