I plunged into the rabbit hole of abstracts yet again off this thread. 600 mg of lyrica, was what they found to be a useful amount with negligible side effects...

For me 300 mg daily was useful for awhile, but was as high as I could go without putting up the car keys. At any rate, the cognitive give back was too great and diminushing returns kicked in as well- whether increased symptoms or actually decreased effectiveness I am unsure.

I am just unsure I could operate at 600mg. I guess it just impresses the point of how different we all react to medicines and treatments in general.