i showed your answer to my friend that recomended ea550g and he said this
"if you use vega56, I still don't recommend using pp11. pp11 topology is still active clamp reset forward, which is only a modification of the single forward topology. efficiency has increased dramatically, but the transient response is still weaker than resonant-HB LLC, especially the resonant LLC-FB
so the two will be messed up. seasonic focus due to aggressive protection settings, FSP raider because of design
but the problems in seasonic can be overcome by the manufacturer with a little tweaking.
on fsp? can't do it. must replace the new platform"