I upgraded to a Grainfather and started adjusting Ph of mash. Efficiency went from about 70% to 85%.
Since I live in Florida and don't have a fermentation fridge/freeze, I have been unable to brew a lager. But I did get a BrewJacket Immersion Pro as a gift and gave it a try. It still can't cool to a low enough temperature, even with house kept at 72. Gonna be interesting to see how the dunkel I'm fermenting turns out. So I guess next upgrade needs to be a fridge/freezer for fermentation temperature control.
There are a lot of lager yeast that work well in the mid 60's if you can get that cool. Brulosophy guys do "warm lagers" all the time.