DosFreak wrote:http://stuffjasondoes.com/2018/09/13/virtualized-dos-gaming-in-2018/
I appreciate the effort Jason did in writing this blog and trying all of that out, but I'm frankly surprised that he didn't find out that SciTech Display Doctor is freeware these days. A little bit of googling would have turned that up pretty quickly.
Although to be fair, apparently, the legal status of version 7.0 beta, which is said to be the only version that works with recent versions of VirtualBox, is less clear. I can't link directly to the article that talks about it, since it shares a download link and a legally ambiguous license key for that version.