It could just be "new tires", although I just had brand new Conti ECS mounted and they were grip monsters right away...
I also just redid my suspension setup last weekend, re-installed camber plates and went from ~-0.5 to -1ish degrees to -3.3, and during test drive, the difference in over/understeer balance was profound, even driving well below the limit!
You have the adustability, so get you some negative front camber, at least -2 degrees and up to as much as -3 degrees. You might have rear camber bumped up to about -2 degrees as well for general handling balance.
For toe, have them dial front toe to 0.0 and rear toe to zero up to 1.2mm (about 0.1 degrees) total or half that per side. Might be paying for a second alignment if they don't want to redo for free, but IMO it will be worth it to you
