Switched from a 105 to a GRX crankset on my gravel bike and was having shifting issues.
Swapped in the GRX derailer and perfect shifting.
A bit tricky to set up with wide range cassettes and wider chain line.
The derailleur does not have full instructions, but you can find them on the web. Great derailleur. Shifts great, trims well. So far, very sturdy.
