Have you ever tried a shorter bow?
I think Jim is correct in much of what he said..if not all.
...including the YMMV part...lol
I have tried bows that were all in the 45-50# range that varied in length.
I've shot/had a 46",48",52",56",58",60",64" recurves.
Also 60",62",64",66",and 68" longbows.
Now every bow had it's own characteristics..different grip shapes, different designs, some all wood..etc.
BUT.... I personally find the longer the bow the better I shoot it.
I prefer a more open string angle at my fingers....which just can't happen with shorter bows. Some shorter bows, like some of the static tips, can give a string angle at your fingers like a longer bow because of the way the tips rotate around/up.
I could shoot the short bows ok..but the longer bows were easier for me to have a consistent release.
I did notice diminishing returns once 62" was reached.
I'm not a great shoot...and my form could use work.
Some guys say they can shoot shorter bows better...I can't..lol
I've tried hunting with a 68" bow.
..didn't really care for it.
I hunt from the ground in natural cover or deadfall blinds.
I normally shoot game in a both knees on the ground position.
A 68" inch bow just required too much room free of twigs/branches/the ground and too much of a cant for my taste.
I've sorta settled on 62" for my "sweet spot" in hunting bows.
This is my personal experience....your's could be wildly different.