This report motivates and defines an improvement to the responsiveness of the Data Center TCP (DCTCP) algorithm. It explains how DCTCP introduces unnecessary lag equivalent to 1.5--2 RTTs, due to the way it processes congestion feedback. A per-ACK moving average is proposed that cuts out 1 RTT of this lag. Paradoxically, the rest of the lag is reduced by spreading the congestion response over a round. The EWMA is designed to still smooth over the same set number of round trips, even though it is clocked per-ACK. This version is released prior to full evaluation in order to elicit early feedback on the design.