DSD 256 file support

I’m very slowly rolling into DSD audio now that I have a DAC - the Bartok - that can play them. And learning about DSD audio. I have 5 albums so far; I tend not to listen to classical much, but am very much into acoustic guitar. Solo piano to some degree too.

I noticed last night that Native DSD has a new pure/native DSD256 album. In looking at what DACs play DSD256 (in their spreadsheet) there are far fewer DACs that play 256 - most top out at 128. I’m curious why that is? Is it the processing power required to parse a 256 file, or something else?

I’m learning about DSD in general and also about how different devices process/convert DSD files. What is a good resource for this; I’m not technically inclined, would love a more consumer oriented resource(s).