I've documented this problem extensively over past 5 months with my broker but it continues. During fast markets, Gain data feed falls behind and can take anywhere from a few seconds to 5+ minutes to catch back up. Price on Gain's DOM or charts is incorrect during these periods making trading nearly impossible. My only saving grace is I also have Ninjatrader with IQ Feed data so I know when Gain gets out of sync. Gain tells me they have identified problem with developers and are working on a solution (for past month now) but it does not seem to be a priority to fix or is just painfully slow. My frustration level each day is high when these delays occur. Consider this a friendly warning to anyone considering Gain or who may not have a redundant reliable data feed like DTN IQFeed for comparison. I'm still hopeful they fix issue soon but am losing patience.