Hi Youri,
you better don't display 150,000,000 samples in a chart... Using SGL datatype this will be 600MB of data and each indicator is having it's own data copy...
Take this approach:
pick only the data you want to display from your huge array. To do so you need to make your own scrolling/magnification routines... Also think of: a usual chart or graph is maybe 800 pixels wide. You cannot display (much) more points on this graph than those 800 pixels...
There are older threads handling the same problem of displaying huge data arrays on limited space chart/graph indicators.
Best regards,
GerdW
using LV2016/2019/2021 on Win10/11+cRIO, TestStand2016/2019