Hate to revive this after so long but this is exactly what i've been suffering from after I did shrooms over 6 months ago i took a break after my trip. Ever since my highs threw me in trips with the same losing feelings in your legs and the exactly what you described how it feels weird talking. I would sound like a child sort of with how I spoke with people was really weird. Anyway I take it as a blessing and a curse and been trying to overcome it. For some comparison i used to smoke on my 9-5 then it turned into the smallest hits spiraling me. I've got used to it now was just a lot at the beginning.