Hello,
It is hard to guess why you are seeing this. One thing that might worth checking in your extra python script is whether the DICOM files are fully populated. But still, Dimon should be whining if many time points go by without any new data.
You might consider setting AFNI_REALTIME_SHOW_TIMES (either as an env var or via the GUI). There is also a -show_comm_times option in realtime_reciever.py.
Are you using realtime_receiver.py from the AFNI distribution, or are you using the functionality from Vinai's PsychoPy-NeuroFeedback-Demo, which has a forked version of it, but which is mostly tracking changes to the AFNI version?
- rick