These kind of problems are related to the software driver for the MIDI interface you are using. You should contact the manufacturer of your MIDI hardware to obtain
the most recent version of their drivers.

If you are running the most recent version of the MIDI drivers available from the manufacturer of your MIDI hardware and the problems persist, you should consider
replacing the MIDI hardware you use now with a model made by another manufacturer. If you are using the joystick port of a soundcard for doing MIDI, you should
consider adding a dedicated MIDI interface to your setup, as in many cases the joystick port of a sound card can prove to be ineffective in handling MIDI data.