The sound doesn't cutoff within Sonar when using the TTS-1 plugin, Sessio Drummer 3, or Superior Drummer 2.
But when I save the file as a .midi file, exit Sonar, and double click on the file that is where I hear the cymbal being cut off. In this case the sound is being generated by the default Microsoft Windows 7 GM software synth.
I am using an RME Fireface 800 in Windows 7 x64 with Intel i7, 16 Gb of ram.
I was just hoping to have the drums sound good no matter what is being used for a sound source since that is how a client may listen to the midi file. (just by double clicking on it and therefore using the default windows midi sound generator.