"Max power" is a nebulous thing when you apply it to the disc golf swing. I believe what you mean is that when you perform excessive bodily exertion, it messes things up. From my perspective, one of the core fundamental rules that you need to adhere to is banishing this entire mentality completely.
There is absolutely no benefit to just 'trying harder', at least for a long, long while. I throw exclusively standstill shots, and it has been very interesting to progress that swing. I went from noob hyzers to 400' fairly rapidly, and from 400' - 450' much, much slower. It has not required more exertion, it has required less, over time. I don't think I have perfect form, but I also don't know how much more I can eke out of a standstill. I'm 5'7, 135lbs, with tiny hands. Pretty much the worst body type for distance lol. I feel like I am at something of a speed limit, but my body is capable of pretending to throw harder, it just requires that I ruin what actually gives the swing power to feel like Im doing that.
I'm sure you already know this concept, but I do recommend that you fully embrace it. For a good long while, you will just have to understand that throwing fairly far is shockingly easy if you maintain the integrity of your swing. All of these things that seem 'little' or like you are 'close' to looking the same as a pro, matter a lot. People in this thread won't budge on this for a reason
Now, there are levels that I have not reached that do seem to require some rather high levels of exertion. People literally throw 200' farther than I can, but they definitely didn't get there by skipping the clean easy power step of the process. Eventually, I think you can go down that road if you want to find out your true maximum potential, but right now, I'd just think differently about what 'max power' actually means.