For the ones who say pot size don't matter that's just ignorant in that case every one would grow in solo cups or 1 gallon pots. The size of your root mass absolutely factors in. Obviously you need to have lights, nutrients and what no one else has mentioned "environment" dialed in which I do which is why I'm talking about pot size I've used 5 gallons for years wanted advice on rather I should jump to 7 or 10 gallon but apparent I should just use solo cups to get the same yield
I don't think anyone here said pot size doesn't matter, you listed your grow factors, we responded.
You said your environment and grow style was dialed in and you ran your preferred strain, that leaves only light and container size. I've done so many grows I know how I get more weight, it starts with the light.
It isn't just a simple "bigger root container makes more bud". If that was the case everyone would grow in 100 gallon containers and use random low watt bulbs.
Light really is a big factor here. I've pulled much larger averages in soil, and way bigger numbers in hydro, even in 3 gallon hydro. So maybe listen if you ask advise even if it's not what your expecting or wanting to hear, so long as we really are trying to help.