I had this game running on my Win 7 64 back when it first came out. I only played a very little bit of it, but it worked OK. This thread reminded me that I hadn't played it, so I reinstalled it. I don't remember why I uninstalled it in the first place. When I started it, I get the same results as Winfrey described. The mouse is very sporadic and sluggish, sometimes stopping moving. I remembered that the game worked OK when i first had it installed, so I found an earlier version and a patch that I had saved on a WD My Book external USB hard drive. I uninstalled and installed the earlier version and the patch, and it works good. I checked with GOG, and the first one I installed is still the latest version. I had downloaded it in 2016, but it hasn't been updated since. I re-downloaded it and tried it again, and it still didn't work. The first time I tried XP compatibility and that didn't work. When I had the older working version installed, I noticed that the shortcut was checked to Run As Administrator, so I tried it on the second non-working install, and it didn't do any good either. The non-working one has a 1.52 (possibly a version number) on the main menu, but there was no number on the earlier one that works. The file from GOG that didn't work was SETUP_MOEBIUS_126.96.36.199.exe, and the older files that did work were SETUP_MOEBIUS_188.8.131.52.exe and PATCH_MOEBIUS_184.108.40.206.exe.
Good luck with getting any response from that Technical Help and Support email address. 2 years ago I had an issue with one of their other games and I sent an email to that address. I never got a reply. Six months later I found a different email address in one of their promotional emails, and I tried again, and that one worked and the issue was eventually resolved. The address that worked was support@************ instead of help@***********.