Originally, Disney+ Support in DRM Downloader did allow for downloading at 1080p video, but only 2 channel audio. Yes, there were some issues that needed to be fixed/addressed due to the Disney+ web site.
With version v3.1.0.0 and newer, DRM Downloader is downloading from Disney+ in a different way then prior versions. This fixed the issues, and allows for faster downloads and up to 6 channel (aka 5.1) audio. BUT Unfortunately this new ways seems to be limited by the Disney+ web site to 720p video.
The release notes for v3.1.0.0 do mention 720p and this higher speed download... https://www.dvdfab.cn/downloader-new.htm?trackID=downloadpage,headmenu2
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- New: Added the support to download Disney+ videos as 720p MP4 files with EAC3 5.1 or AAC 2.0 audios at blazing fast speed. (Disney+ US/DE/FR websites are supported as of now, Disney+ JP will be soon.)[/code]
Unfortunately while I've seen forum support staff acknowledge this 720p limit, I do not recall seeing them post if they think they can bypass this limit from Disney.