Remember it’s hard to duplicate on-course playing conditions for objective testing/comparison as temp, wind, humidity, your swing feels, etc. can vary day to day & week to week. The sound at impact will be realistic vs indoor/launch monitor testing in my opinion. I’ve read that expert club builders can tune sound by adding “hot melt” through driver hosel…..
Assuming you’re not playing from tips & 150 yd & in game is basically sound, then 80’s scores indicate to me a couple more fairways & bit of mid/long iron help could get you to upper 70’s (my $.02)
As for your iron woes, you could consider 1) a higher spinning ball or 2) a combo set (or both)
Spending more money, a shaft change is an option (softer, lower kick point, softer tip, etc)
Good luck !