Hello,

Regarding the delay when moving a table, with each mouse move there is a portion of the diagram invalidated which cause it to be redrawn. If auto-scrolling is enabled, the whole visible area will redraw.

So if there are a lot of these tables visible at the same time, e.g. ZoomFactor is small or if you use the Overview control, then repainting will take a lot of time. To improve the speed, try disabling most of the Overview.Enable* properties, or use a larger ZoomFactor to have less tables visible. Try also setting CellBorders to cbNone or cbSimple to skip drawing the 3D-effect frame lines.

Some other things you could try to improve drawing speed are disabling EnableStyledText if it's used, or using smaller images if using images which are scaled down to the size of a cell. If using the GDI+ graphics engine, disable it, because GDI+ does not use hardware acceleration, while the classic GDI uses it when available.

Even if there aren't a lot of tables visible at the same time when painting, the bounding rectangle of all tables are intersected with the visible area rectangle to determine whether a table should be repainted. So if the suggestions above don't help, you might have to show only parts of the data at the same time and load more data when users request it.

I hope that helps,
  Stoyan