though it has been a long time since I looked into it, I don't remember it being over complicated or running into the issues you have
I hope you did not pay for that emulator as all I used back in the day was free stuff
If I get time I can do a bit of testing
Though a little unsure why you want to play that port, back when I was messing with an Acorn Archimedes emu I enjoyed it for a small amount of time (Not that game, just in general I never tried that game at all)
P.S. the game was even ported to a Web browser game
http://3d.wolfenstein.com/ or https://archive.org/details/msdos_Wolfenstein_3D_1992
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