Yes, NO TICK REPLAY. If you are coding strategy - add 1 tick series, and that's it... it runs very well without tick replay - no lag at all, and you can get any value / any plot programmatically when running on each tick and place trades... Must have for OrderFlow analysis / automation. You might get couple of ticks out here and there, but overall very precise and orderflow will be at least 99.9 percent right overall - but no tick replay in fast markets makes it usable for automated trading.