It's 4K for closer inspection.
As usual, the weekend has been pretty intense rendering-wise because it's the time when I can fully work on this. Managed around 103 renders, averaging 12 minutes. Almost 21 hours of rendering.
This 4K preview took 30 minutes to reasonably converge on this super optimized scene, not counting the clothes simulation, for comparison. It's a thug life, but I enjoy the results.
The primary way I deal with noise and fireflies is rendering everything at 4K and filtering to 2K. One of the many secret sauces of this stuff as integrated or ML-based denoising is always way too happy to remove high frequency details alongside noise.