No, wd, I am talking about DosBox CPU usage. It looks more like something in DosBox fires up after a while... QBix : Applied suggestions. Still no good. Thanks, Pierre

Thanks but no change. Even tried 25% and lowest priority and not working with Sym2. No good. And it seems the lower the cycles %, the quicker CPU usage reaches the 60-90 band... Help ! I waited too long to find DosBox.

Symphony is my only Dos program. Before discovering DosBox, I needed a stand alone computer to run Sym2 under XP. With DosBox, I can run simultaneously XP programs in their windows and Sym2 in its own window... and discard the 2nd computer. Thank you to DosBox for this good step. But now I have a …