There are linear.com sync buck drivers which have bootstrap drive for a top side nfet, and these I think are better.
You always need a series gate resistor , as EasyPeasy said, even if you end up zer0-ohming it…..also to reduce problem of esd damage to fets, your better with a 10k gate-source resistor too.
You should be able to do this and get pretty cool running fets , so you are right to be concerned….as EasyPeasy also said, you also need parallel schottky in parallel with your low side fet……….then what you can do, to investigate if shoot through is prevalent………you can remove the low side series gate resistor……put a zero ohms from gate to source to keep the low side fet off…then just run it through the schottky, which will give far less shoot-through…and you can see how that heats.
Also, did you manage to properly solder the heat pad of the fets to the footprint?
Linear.com have loads of sync buck drivers with fully working ltspice models, so it’s a shame you don’t use one of those……..i am just wondering if your top side fet drive is too weak…..as the vgs didn’t look too snappy….of course, as you know, a too quick vds rise and fall time can sometimes cause noise….and one of the uses of the series gate resistor is to dampen the switching so as to reduce this noise.
What about buying one of these so you can see the heat of the fet…..HT-04 thermal cam by HTI
https://uk.banggood.com/HT-04-220x1...MI-pWc34e04wIVxrTtCh0mIgHxEAYYASABEgL1vvD_BwE
Resolution not great but good enough.