To begin with, 5 s steps for the current pace display are already just nothing you could align your pace to properly. That's 3 1/2 minutes over a marathon.
But even with that restriction, the current pace is still ridiculously bad in the 955 solar, even in best conditions (flat road, clear sky, no gps obstacles) it jumps around in a 25 s range. and no, that's not me getting randomly 25s/km slower and faster, I never run that drunk.
For pace control, that's just utterly useless. The one thing you want from your >500 € gps running watch.
I remember previous editions of the forerunner had to-the-second exact 3s or 5s average paces, which were much more applicable. It can't be hard to implement.
Currently, it's just aggravating. 1,000 bs functions, but the one important is rubbish.