moorey
call me Mia
Derailleur is fine. It’s also running 10-46 when 10-42 is recommended for Gs 11sp…adding to B screw tension.Your rear mounting to the derailleur looks to be wrong.
This should give you some indication of the correct length of cable for the radius you require. Radius is measured from the hanger hole to the frame cable exit. This only applies to shimano outer OT-RS900. If you have a different one the length required is longer.
View attachment 376601
Shifting is mint for a few weeks after fresh cables.