Do you experience problems during downloading?
Check your connection in Status and Interface settings window.
Use Test Server in Config > Servers.
We will probably ask you to do a test using only basic settings.
Do you experience problems during repair or unpacking?
Enable +Debug logging in the Status and Interface settings window and share the relevant parts of the log here using [ code ] sections.
The reason is most likely a bad Python port, which is something we cannot fix.
Disabling the threshold in Config->General will "fix" it, in the sense that SABnzbd won't pause its downloading.
The displayed values will still be incorrect.