Annoying automatic setting change

[deadman]

Every so often my eMule changes something all by itself and my uploads start transferring in 9.3 MB chunks followed by automatic disconnections rather than going continuously until finished. I can't find whatever setting in the Options menu needs to be fixed, so I have to restart the client and it takes a while for the Kad connection to be fully open whenever you do that. How do I prevent this and/or change the setting back when it happens?