The '26 Diverge I acquired late last year came with Shimano's CUES groupset.

Didn't have a lot of time to ride it before outdoor biking season closed in October, but enough that I got a feel for the differences between CUES behavior and the 105 stuff on my Tarmac.

Last week saw a break in our winter weather, sufficient for me to drag the Diverge up out of the basement for a couple of days' commutes the 3/4 mile to work, and brief forays out for lunch.

Shifting the RD didn't have as much of a delay in the beginning as it seems to have developed between then and presently. It's the in-between RD shifts that tend to pause, when going to smaller (higher) gears than larger (lower).

So I'm wondering if it's just a cleaning maintenance project, or maybe a B Screw adjustment to minimize the 'built in' CUES delay?

Your thoughts on this, if you've experienced similar characteristics, are welcomed.