Hello ProToms,
The buffering problem with sc_trans 2 is probably due to misconfiguration, most likely you are using VBR or a sampling rate that is too high for the stream's bit-rate.
As for your issue with Liquidsoap, there are currently no known issues that would cause the resulting stream to not match the station's set limits. If you are a customer at centova.com, you could open a ticket via our helpdesk so that our staff can assist in troubleshooting, otherwise, you'll need to contact your reseller or hosting vendor for help.