There seems to be a serious problem with the raw buffer node. See attached patch.
It behaves even more strange if you manually enable/disable the set-pin with a toggle-IOBox:
After setting it to false and then left(!) click alternately the toggle button and the background you can sometimes enable/disable the throughput of data.
Tested with 33.7 and 34.2_1 (64bit)
RawBufferProblem.v4p (4.1 kB)