How do I improve from this test?

I've printed this tuning test on my VCore 3.1 400 with a 0.6mm nozzle, in PLA at 215c through a Rapido HF/Orbiter 2, 100mm/s & 4k acceleration external perimeters. PA set to 0.045 and IS active in RRF (yeah not using Klipper but RRF on Duet 6HC). Layer height 0.2mm.
The print took roughly 1h, 40min.

I printed a Benchy with the same settings that looks pretty good, some ringing but overall better than this larger test. I understand this model was (probably) designed for a 0.4mm nozzle so the fine details will suffer.

My goal is to print large parts with good quality at decent speed, I have a Formlabs F3B+ for small parts that need lots of details.

The too me most obvious things I would like to fix are:
1) Ringing
2) Branches on the rear left poles
3) Corners

I would really appreciate feedback on what settings I can adjust.
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