Click and drag for MIDI note trimming too sluggish

[mixaudio]

Hello everyone!

Anybody experiencing this? Seems like the more MIDI tracks I add to a session, then when clicking and dragging to trim a note, that process becomes too slow and sluggish. Sometimes I need to wait for the screen redraw to catch up with my mouse movement. If I don't wait for this, then many times I end up with notes trimmed to undesired lenghts. Clicking and dragging to move notes around, either to different pitches or places in time doesn't have any problem.

Any ideas on how to solve this?

I've been trying the following with no success:

Hiding MIDI tracks.
Changed the edit window behavior to slip, grid or relative grid.
Gone to Display Preferences and turning off the "draw grids in edit window" as well as setting "no color coding in edit window".
Quitting and reopeing.
Restarting the computer.
Lowering the monitors color resolution to thousands instead of millions.

Thanks for any help with this!

Peace for everyone.

Rodolfo Fernandez