Mom in memory care but not in need of daily living activities. Should I look at larger facilities?

Wondering if there are others who put there mom/parent in assisted living but it quickly turned to memory care and the resident population dramatically declined. My mom recognizes the rest of the residents in the locked area are way worse physically - she can dress and bathe herself and is mostly independent, just can’t remember things for a minute or two. She regularly asks me if she works there and is getting paid. She honestly thinks that. I’m wondering if a larger facility might have more people who aren’t in need of nursing support? My mom seems really unhappy and stressed. Want to figure out if I should look for larger facilities because more people might offer more variation in Alzheimer’s issues.