Ya might look at how you conduct your practice sesssions as well. I have a couple of buddies who shoot with me that are wheel bow converts.
I had to modify their practice method. With a compound you can shoot arrow after arrow without getting too fatigued. How many arrows in your pocket, and how crowded the bullseye gets are the limiting factor. Not so with trad. gear. I only shoot 3 or 4 arrows, then go have a look at the target. I take a close look. Are all the arrows in a good group, are all the arrows straight into the target? These things can tell you a lot about your release and such. Taking the time to look at these things gives your back and arms a rest. I pull the arrows, take a swig of water, put all the arrows back in my belt quiver, then return to where I am shooting from. Shoot 3 or 4 more arrows and repeat the process.
Just standing there and shooting arrow after arrow wears you out, and honestly I can't maintain the level of concentration needed for good shots through a dozen arrows. Like I said, 3 or 4 at a time is my limit. When you shoot with another archer, it puts even more time between each shot effort, helping even more.
Ya might give this a try before getting new limbs or a new bow. If it don't work you always have those options.
Were it me, and the additional limbs at around 45# were available, I would go that direction.
Good Luck!
OkKeith