Adding up all the factors that result in .5%,1%, 2%, 5% increases in both accuracy and precision lead to you generally being more accurate and precise, on a more regular basis. Picking and choosing one or two out of the dozens of options will not make a material difference in your shooting results.
Your results will vary - if you're someone who is doing many things to improve your shooting, the % difference it makes for you versus someone who does nothing could be drastically different.
I think about it like this - do nothing, and accept the shooting ability that comes along with that. Or do as many things that are within reason that you can, and accept the shooting ability that comes along with that.
I can shoot a Walmart bow with Walmart arrows and mechanical broadheads, no tuning, biscuit, no peep, practice for a week before the season, and shoot deer inside 20 yards from a tree with a high success rate. I know if I attempt anything beyond that I'm essentially throwing dice.
I can shoot a tuned up bow, with tuned up arrows built for efficiency, COC fixed heads, utilizing most of the little tricks to improve accuracy/precision/repeatability, shoot once or twice a week all year, and shoot deer out to 40 with a high success rate.
For elk - the spread grows a little for me, but plug in 30 and 70 respectively.
Walmart bow example above, with only switching in micro diameter arrows, doesn't get me anything.
Efficient bow example above, going from standard to micro diameter arrows on an elk hunt in 30mph wind might be the difference in a gut shot or shoulder shot elk.
Yes, micro diameter shafts will drift less in strong winds. Does this mean anything to you? You can only make an educated guess with all the information given. There's no way to measure results, the experiment is too dynamic, and if you're like 99.99999% of hunters, you'll never shoot enough times to learn anything.