Hello Sandra, thanks for your reply. I can see no difference with your code at all. The cursor tool of one chart still lags behind while you move the mouse on the other chart. Besides it is no option to set both charts to the same datasource as the data is different for each chart. When I first test...

we are using 2 teecharts and sync the cursor tools of both charts in the CursorTool_Change Event. It works ok when we hide the axes of the charts, but that is no option for us. When we show the axes of the charts, the performance is very bad (tested on an an up-to-date Intel i7 cpu). The reason for ...