I did that too. In 1999 I bought a Fender SRV signature strat and always strung it up with Ernie Ball Beefy Slinky’s. Man, that guitar was miserable. I finally started using 10s and these days I usually use 9s and even have a set of 8s on one of my guitars. I got an acoustic last week with the factory set 12-54 and it took 5 days of playing it every day for at least an hour for me to get comfortable with it. When those strings wear out I’m definitely getting something lighter on it. As far as action goes I like the board almost flat with maybe just a tiny bit of relief and then I raise the strings just barely above buzz. I play with a light touch so that works for me with action set that way.
Thanks for sharing. Am the same way but instead of Ernie ball power slinky now they are just super slinky. Been having success and great playability with 9s and low action but interestingly enough still kind of a lot of relief in neck.