>Hello,
>I show Excel chart on VFP forms with OleBoundControls. It works fine, until come Excel 2016 and higher.
>lcF= some excel file
>create cursor bla (bla g)
>append blank
>append general bla from (lcF)
>thisform.oleboundcontrol1.ControlSource="bla.bla"
>thisform.oleboundcontrol1.refresh()
>This code executes quickly and in excel prior 2016 show in 1 second.
>But in new excel it takes 10+ seconds.
>Now are all PCs in my company new and modern :(
>Is there any vfp solution ?

This is not a solution. I've noticed that sometimes when using Excel, first workbook opens immediately. Opening second or subsequent ones can take a long time.
You might try making sure you have only one instance of Excel running at any given time, see if that makes any difference.