Thanks you for your prompt replies guys.
I am only actively monitoring about 5 or so markets at one time (whilst they are in play), on a busy day perhaps about 10, MFPro & my PC seem to handle this fine so I don't think it will be the refresh settings.
I think it is most likely because of the starting, stopping and then needing to restart the markets later that this is happening.
Can I ask as my tactic involves adding markets early, placing some orders to keep for when the markets go inplay, then stopping the monitoring until a min before the start, I then want to resume monitoring automatically of each market for the triggers to fire in the closures at the appropriate moments.
Is it actually possible for me to do this without needing to reboot MFPro in the middle?
Thanks again for replies.