Yeah, I've found this too. Most metal, heavy rock, emo rock and other stuff that's suffered from the loudness war tends to get shown up as badly recorded in my system. It's an odd problem and it's something that kind of took me by surprise as I thought most of the CD's I owned were quite well recorded. Unfortunately I was proved wrong.
[RANT]
It seems that a lot of popular music over the years and especially these days has been mixed to sound good on the radio in your kitchen or car, in a club or on iPod headphones etc depending on the genre. I guess this makes sense from a business point of view as they're the places most people will listen to the tracks. So if they sound "good" to most people there, then they're more likely to go out and buy it. Unfortunately that's not the way us "audiophiles" do things. It only tends to be classical music, Jazz and music from musicians/singers that are only interested in recording high quality performances of high quality music and aren't interested in making much money that sounds good on a proper Hi-Fi. The new trend of iPods as being the source of all music really hasn't helped. I really don't get all this iPod dock stuff. I'd maybe have one as a basic upstairs type system but that's all they're good for.
The whole music and movie business is broken. It's all about making a product that lots of sheep people will buy and then forget about so they'll go on to buy the next thing as quickly as possible, making the maximum profit for the studios. It should be about quality products, not quantity. I'd much rather own one excellent album that ticks all the boxes than 10 mediocre albums.
[/RANT]
Source: Apple TV 4K - DAC: Beresford Bushmaster Mk II - Preamp: CI AudioPLC-1 Mk II - Power Amps: Musical Fidelity 550K mono blocks - Speakers: Wharfedale Opus 3 - Cables: Mark Grant etc - Misc: Belkin PF30 mains filters.