I am new to the forum, although certainly not new to dos based games - as I cut my teeth on old tandy rs Mod I - and migrated as the years went on.

I am using Megbuild 6, in order to get printing and networking support;
However, the issue is neither of these features.

Megabuild 6 goes completely unresponsive in VGA full screen (640x480 16 colors). Returning to windowed mode makes the system responsive again.

Dosbox .72 does not have these issues. Both full and windowed modes work well.

I have tried changing the machine=vgaonly, and tried various settings of full and window resolution.

I've included a version of the application in the attachment. Run the dp26yu file and then switch to full screen mode and you will see that the application is unresponsive. Switch to windows mode, all is well.

Anyhelp appreciated

Chris