Qt Charts - Very long time to load 10-15K points in the QXYSeries

Qt charts takes very long time if points are above 10000 in the QXYSeries. We have an application which provides real time filtering of large amount of data and display filtered data in the chart. Currently if number of points are very large (e.g 10K), it takes very long time to load the chart. It causes severe inconvenience when working with interactive plots.