Originally Posted by Dstruct
But I'll just got REAPER to hang completely while testing this. Trying to reproduce ...
With the attached project (and Vember Audio Surge VSTi 1.5.2 x64 instead of ReaSynth) I can get REAPER to freeze/hang forever almost all the time when starting to record MIDI (sometimes it needs more time to reproduce but it will happen).
Maybe someone can test it with the demo?