I thought a representative from the char company came on here to take note of the comments on charts? Please come back. I cannot understand why these jerky movements happen? They happen most often on the 1 minute candlestick charts but have seen it happen on the 10 minute too. I feel it is something to do with resizing the chart as time passes. For instance, the jerky movement persists longest when the chart tries to fit the price and the MACD indicator does not fit. Then it tries to fit the MACD all in and the price does not all fit in. This oscillation has persisted for more than 10 minutes and it has not stopped yet.
At other times, I just cannot understand why the price chart jumps out of view and comes back into view a second or two later. I think this happens most often when the price is near the edge of the frame but I have seen it happen even when the current price is right in the middle well away from the top and bottom extremities.
To offer a balanced view, I think price is updated very fast. Although it does not capture all price movements from the deal ticket. I have compared it to other charts, and I think it has been the fastest.