For my Arduino type projects 0.1ohm/m is ok but for Pi about 10x better is better. What gauge is it?
As far as switchers IMO yours is middle of the road capable and not something I would personally use for Pi4 or original Pi3. Most of those LM2596 type seemed to work ok with Pi3b+ and at first even Pi4 but after a few hours or days the lightening bolt started to show up. Not all and some more often than others.
See my 1st photo. First two same as LTolledo. Tiny one 5/$1 on Ebay and only good for Pi0 IME. Middle one LM2596 2/$1 failed often with bigger Pi but not immediately. I suspect there may be some product culling here and seconds sold cheaper.
It's not so much the chip as the inductor and caps. PCB layout too. See my 2nd photo for an example how tricky these chinese sellers can be when it comes to cutting corners. Notice how much bigger the top toroid is compared to the bottom, otherwise identical unit. And the heat sink too although putting one on top of an IC like that has relatively little benefit.
That last one on the right (XL4015 chip) is the only version found to be reliable across all my Pi models. In fact ok for up to 4 portable USB drives but some extreme wiring measures needed as mentioned in my old post. They used to be less than $1 ea shipped and not much more now even with tariff war and virus:
https://www.ebay.com/itm/DC-DC-Buck-Ste ... 2749.l2649