This is Steeveeet's *NANO* All In One 3D printer test https://www.printables.com/model/61996-nano-all-in-one-3d-printer-test which is itself a remix of Majda107's *MICRO* All In One 3D printer test https://www.thingiverse.com/thing:2975429

This tests:

• overhangs
• bridging
• stringing
• retraction

On a Bambu Lab printer, it's more a test of the filament and its settings since the printer is fully capable of doing a good job of the test. The photos show a test of Bambu Lab PLA Basic. It passes nearly every test - no bridging droop, no stringing. The overhang text is well rendered at the top, all the way to 80 degrees, but fails at the bottom - there are a few failures at 60 degrees and 70 degrees and major failures at 80 degrees. This is to be expected and is about as good as it gets, much better than other printers. It's obvious that Bambu Lab's settings for Bambu Lab filament work well here. But poor filament with inappropriate settings may show worse performance.

Maybe the underside of the overhang would work better printed more slowly, or with greater cooling? That's the purpose of tests like these.

Edit the filament settings in the slicer to improve the print.