Vase mode means it runs in a continual fashion without stopping. It saves time but it's not really possible with anything that can't be outlined in a single layer. It may do some kind of variant to allow mutiple components but then you're losing that time om start/stops again.
Note you can switch to a 0.6 or even 0.8mm nozzle, and then set the line width to 1.5x the nozzle widh and et a pretty thick single line, but that also means your flow has to be able to keep up (most hot ends can't do > 0.6mm w/o upgrades
