the trick is to find the flow restrictor and remove it ... google your specific model with the additional words flow and restrictor ... you can do this BEFORE you buy a given model ...
btw, never buy cheap crap faucets ... even brand names like Delta have low-end plastic ones that are crap ... and i’ve given up on Delta anyway as they almost never honor their so-called “lifetime” warranty ...
recently, i’ve moved to Moen faucets ... oh, and i’m not a fan of faucets that have batteries and electronics for “automatic on/off sensing’ ... after all, how well have you seen those work in commercial and retail stores ...
This faucet is primarily stainless steel and brass, where it counts, with a (mostly) plastic diverter and cartridges (some metal and ceramic in those).
Tuscany did, to try to placate me, send me a replacement diverter and hot and cold "cartridges" (the gradual on/off valves.)
Studying the whole thing, my conclusion is that there are several points of flow restriction, each of which has a modest effect, but added together a large effect. Some are essentially un-modifiable, like those cartridges.
It'd be very interesting but fruitless to know if EPA at some point imposed design requirements to defeat people who'd try to mod a faucet for higher flow.
Tuscany's customer service has been quick to get back to me and as helpful as I suspect they can be (send parts, etc.), but the CS Dept. can't supply alternate parts as none exist.