While noting that it's possible that Houston and NC State aren't good on offense, it's interesting that Tech has only given up one long TD drive this season (in terms of starting field position, not time of possession on the drive)
Against Houston, the 20 points they gave up in regulation came from a punt return to their 19 leading to a FG, a pick-6, an interception at their own 20 leading to a FG, and a TD resulting from a longer drive (4 plays, 67 yards)
Against NC State, the 27 points they gave up came from a muffed punt at their own 13 leading to a FG, NC State starting a drive at the NC State 44 leading to a long FG, NC State starting a drive at the Tech 43 leading to a TD, a pick-6, and NC State starting at the Tech 38 from a turnover on downs leading to a TD
I'm not sure how good the Tech defense is, but at the very least it appears to be better than Tech's defenses have been recently, and the offense is really fucking it over