I agree with you on the game plan, or lack of one. Per 24/7 sports, McCaffrey had 20 carries in the first half. That's far, far too many IMO. When his passing started to get even worse (high/low throws), the thought entered my head that we'd find out tomorrow or Monday that McCaffrey had injured his shoulder on a particularly hard hit he took on a run play. If I recall correctly, we later found out that Martinez's passing got worse last year because of an injured shoulder that eventually required surgery before this season.
If Frost keeps running his QBs like this, we're going to have a round robin of guys who visit the orthopedic surgeon for shoulder surgery.