Hi, 

I have two forms opened at the same time and both forms have a grid on it.

the formA have gridA bound to winDataSourceA, and the formB have gridB bound to winDataSouceB.

the winDataSourceA and winDataSourceB have about 2000 rows.

the gridA with winDataSourceA have to update data frequently, about 250 times a second.

its performance is perfect.

but when I scroll the scrollbar on gridB quickly, I found that gridA stop updating until I stop scrolling.

when I stop scrolling the gridB, the value of gridA jumps to the correct value and resumes update.

Could you please give me some suggestions about this situation?

in my system, the gridA needs update value immediately.

Thanks a lot.