Now, that's funny. I strongly suspect that in 95% of all cases it's not the client computers performance which is the cause of lagging data, but eSignal's servers and/or software.
Receiving data and displaying them in 2D-Charts is not rocket science and does NOT require a vast amount of computing power. This is even true for very active markets. There may be exceptions if displaying a large number of symbols, but that's not the case with me.
Every time I experienced lagging data, neither the availaible performance of my computer nor the available bandwith were utilized anywhere near 100%. But of course, it's much easier to simply state that lagging data is the customer's fault...
Still, eSignal is not that bad. In fact, for the price it's quite ok. But eSignal should refrain from giving their customers the fault for their own shortcomings and work on their equipment and software.
And, yes: What's about the promised 6 months (yes, it was 6 months, not only 30 days) of intraday data? Still waiting for that.
