Yeah, the feedback is largely scattered between here, the Steam hub, Twitter, and several Discord servers. It's a little tough tracking it all down by myself.
I don't think there's anything you can do to help unfortunately, but I do appreciate the offer. It's just going to have to be a back-to-the-basics try-stuff-and-see-what-sticks approach unfortunately.
And as for your Outer Wilds ill comparison guess, you're essentially right. In TCFDX all enemies, gibs, and some projectile weapons have gravity transformations applied to them, so it's a bit more intense in that respect than Outer Wilds. But I did some more digging and experimentation and a possible cause might be a specific enemy type performing a sight check, along with the gib movement calculations. I've made some changes around those to try to make them more "theoretically" performant, but I can't tell if the performance boost is a placebo effect due to me not really having the issues others are having. After some internal testing I'll push the update and we'll all cross our fingers.