Display measurement values in chart

We are developing a windows application to control and monitor a scientific instrument. In order to display curves of measurement values, we are using the MS Chart component with MSChartExtension ([login to view URL]). At this moment it lacks are some features which should be added and/or improved. Some issues which need to be addressed are - performance optimization for large number of data points - interactive zooming and panning - zoom synchronization for multiple views We are therefore looking for an experienced GUI developer to help us out. There are further tasks which could be defined in future projects, but we are new on the freelancer.com platform, so we are also still evaluating this way of working with external developer(s). Techniques and tools to be used: C#, WinForms, Visual Studio.