A receiver receiving a transport stream to demodulate the transport stream into a final output stream, wherein the transport stream comprises a plurality of symbols at least one of which carrying at least one program clock reference (PCR) value, and the final output stream comprises a plurality of demodulated symbols each comprising a plurality of packets, is disclosed. The receiver can comprise a Reed-Solomon decoder configured to decode the transport stream to generate a MPEG (Motion Pictures Expert Group) packet, a MPEG memory configured to store the MPEG packet, and a descrambler configured to read the MPEG packet from the MPEG memory with a throughput rate and descramble the MPEG packet into one of the packets of the demodulated symbols of the final transport stream. The throughput rate is decreased to reduce bursts of the packets of the demodulated symbols of the final output stream.