Hi,
The data in selectbox is retrieved during form loading. So it means most likely the delay is caused by the loading process of the selectbox's options binder. 50k records for a selectbox is huge enough, put network latency into calculation makes the loading process even worse. Unfortunately I don't think there is any easy solution for this. Making your own selectbox which support partial data loading (with pagination) would be the ideal.
Press the grid button to retrieve the data for Form 0302-from Delivery.
When calling the Form 0302-Request Delivery page, the browser will hang for approximately 5 minutes and pressing the button will hang for another 5 minutes.
I'm a newbie who took over a job from someone else. Is there any way to fix this?