I want to update this, because good things have happened.
I'm in 0.75mg risperdal in the morning and 0.75mg in the evening, and I can say with pride and joy that I have recovered my mental speed to the point that I can easily write 1.000 words in half an hour (in my best moments I could write 1.500 words in that time, and they had decent quality, which is impressive given the amount of them. I want to add that I write in spanish, since english is not my main language).
It happened suddenly. I forced myself to write, to put on the effort, and at first I felt my brain fighting me. It was weird and uncomfortable, but I kept going and eventually I stopped feeling discomfort. Now, I'm able to write decently, relatively fast, and my creativity seems to be back.
I'm very happy, and I think I can function with my meds without impairments. That said, I think I will try to stop meds when I am stable on them for at least a year, so that is something I will talk with my doctor. But right now I am feeling great.