You’re welcome.
You have access to further settings using Orca Slicer.
In most cases, Bambu Studio meets my needs, but for further tuning, Orca is my choice.
There is contradictory feedback regarding the support material’s success. I lack experience with it, as I don’t print that much PLA, and when necessary, I use PETG since it always works for me. Give it a try.
Here’s a topic with a similar issue to yours:
Standard settings are usually quite good; if you are into aesthetic prints, I advise using “high-quality” profiles whenever possible, at the expense of high speed. Besides that, further improvements come from dry and calibrated (at least PA and flow) filament.
And yes, the material change takes some time. I already got used to it, so I don’t notice that often.
Your print volume is relatively small and, therefore, more noticeable.
In larger ones, few filament swaps are barely noticeable.
Enjoy it.