Gents,
I have done extensive testing of Mach 4 V2 on 3 machines. All running Win 10 PRO. Home will NOT work. Here are some things to ensure there are no interference's from Windows 10 PRO on Mach:
1.
Make sure that Smart Screen is turned OFF. (MOST IMPORTANT) Mach will crash and stall. Fail to restart without reboot. In Control Panel go to Security settings. Find Smart Screen. Set to OFF. This causes issues when you shutdown Mach and do not reboot. Why? Because WIN 10 thinks Mach is an internet program. Go Windows.... Lol.2. Set your App security to allow anything. WIN 10 Pro allows this. Home... Not so much. It is under user security.
3. The glorious Windows Defender App. You cannot turn it off directly. You must disable the service.
4. AVG Anti-Virus works fine and does not screw with Mach 4 V2. Most others do. They are too intrusive. Skinny is best.
5. Make sure you do NOT use compatibility modes. Under the program properties menu. Right click Mach icon.
6. Set in the program security settings to always run as admin.
As I complete the testing I will post more. But, overall the performance difference from XP, and 8.1 are leaps and bounds better. I think that maybe Billy got it right this time. But, the jury is still out.

Don