I have latency/sync problems when using the Microsoft GS Wavetable SW Synth

From N-Track Wiki

The Microsoft GS Wavetable SW Synth is a software synth, it adds approximately 1/10 of a second of delay between the time it receives a MIDI note and the time the note can be heard through the audio output. This may create sync problems with audio tracks and other MIDI tracks sent to hardware MIDI synths. If your soundcard has an hardware MIDI synth it should be preferred over the Microsoft MIDI synth.

The desired MIDI outputs can be selected in the File/Settings/Preferences/MIDI/MIDI devices dialog box. The default is Midi Mapper, which matches the MIDI output device selected in the Start Menu/Control Panel/Sounds and audio devices/Audio as default device for "MIDI Music Playback"