It looks like a bug in dosbox. Try using a different core.
Of course I assume you've already searched the forums and have found nothing about constructor 😀

Unless you're using an LCD, you'll likely find dosbox/etc preferable since, with revamped dos games, refresh rate is still usually 60/70Hz.

!!!!! cure for Constructor on Dosbox 😉

It is not a bug of DOSbox. You only need to dowload univbe for modern Video cards, for exapmple from here:
http://www.old-games.ru/utils/modified_univbe.zip. i've used ver53.a as from readme

I've tryed to run Constructor before - it hangs on place of house, after using this driver (place it into .\settings directory of Constructor) it works WELL!!!
😁

very interresting.
Constructor didn't hang. it would continue if you waited long enough. So it's ncie to know that the problem is probably related to something with the video card. (I assumed it was related to audio)

heh, univbe don't play a role on Constructor hang (it is not a hang 😀), i don't know why it had helped me first (it was on a pc with win XP2 and all media integrated into mb, p4-2,6). But on another comp with non-integrated video Constructor normally played with new univbe until building of cement yard. It hang again! The cure for it is to set processor cycles=15000. But the sound is not quite good. By the way - on the first comp there was an illegal instructions, on the second (maybe i taked no notice of it) there was no.
CONSTRUCTOR - RULEZ! 😁