I’ve heard of players dropping a stroke with 1 score (a good score), but I’ve never heard of anyone going back up a stroke with 1 score. I can shoot well above average and it moves me up about 0.1 for each high score. Makes sense with only the 8 best scores used out of 20.
My club is 35 + 34 = 69 and as a 16 my handicap is split 7 + 9. At times I was playing the back 9 regularly (only option) and it will pair two back 9 scores (even from 2 different courses). I am assuming I get 2 extra strokes because of the “harder” holes? Not sure if those scores really affected anything.