What is Fast Market Mode?
Fast Market Mode is available for extreme market conditions and is rarely needed by Investor/RT users due to efficiency improvements that have been made over time. In certain circumstances, it is possible for an extreme surge in volume to result in the program getting behind on the processing of ticks. During this situation, Fast Market Mode can be turned on in order to allow Investor/RT to quickly catch up. When Fast Market Mode is on, Investor/RT streamlines the reception of certain non-trade information (bid/ask changes).