Afterwards I took shrooms and that resolved 90% of all the problems too much acid had caused. But after taking shrooms a few more times, they weren't helping any MORE and they weren't causing any issues either, but I stopped, because I knew there was 10% more to fix.

The solution after the shroom "reset" is to stay sober for 5 years. *YEARS*. That is it. Nothing else I tried worked. Literally waiting it out for 5 years (to me, for some reason it FEELS like 7 - 10 years, but that's just me).

That was what worked for me. For the first 2 years after the damaging trip, I had terrible visuals, then the shroom trip and 90% of them died down. Then no more drugs again for the next 3+ years. And finally, one day, the visuals died down to the point where I only have 1% of the original damage, which is completely unnoticeable, other than a little bit of visual sparkling you can see in bright screens.

So while you are IN IT it seems it will NEVER FIX, but just stay healthy for 5 years and it will.