I agree with the venerable Jo.Ka. I've never seen a quarter that compares with that futility. Over 100 pp/100 at all 5 positions (with no subs) and with equal effort, yet you scored 5 pts on ca. 25 possessions. Improbable.
Doesn't make sense that it would be stamina, since you went ahead and scored 38 pts the next quarter -- again without subs.