Myst looks the same on any Windows, but yes, the original experience is very rewarding, I hate win3.x just the same.
ScummVM has many advantages, I don’t mean to compare them, but the enhancements are a matter for debate, the DBP experience is much more authentic and expansive, for example, you can play a game with the General Midi sound, or SoundBlaster, an original GUS or an enhanced GUS, a Roland MT32 or some of the hundreds of Sound fonts that are great.
I forgot to tell you this, from the Build you can download old cores. In the stable section, you search for your platform and architecture and download the package “RetroArch_cores.7z”, unfortunately they are not listed, you have to download one by one until you find an old version.