Which Groupset?

The problem (and as said Shimano acknowledged) is that running the cable run under tape for shifting was comprised if the bend radius of the cable following the bar was too tight ..

You said ergonomics not shifting performance.

I agree the shifting isn't quite as snappy as my 7800 DA but that isn't exactly a fair comparison. It still blows away most options. As for braking, it's still better than everything else except DA.