Date input in portal is slow

[Montana50]

FM 17

I have a tracking log in the form of a portal where we enter data of shipments. Date input is drop down calendar. No problem.

There is also a field to keep track when the shipment comes back.

Date field with drop down calendar.

The input on the first portal row goes instantly.

The input in the other portal rows is only after 3 to 5 seconds. The drop down calendar stays visible for the given time (3 to 5 seconds)

Removing the drop down calendar from the field and doing the input manually, instantly.

Any idea?

There is nothing complicated not fancy. Just a simple portal, simple relationship.

TIA

[Fitch]

You might try creating a new layout and pasting a copy of the portal there, or since it's a "simple" portal, re-creating it on a new layout. Does the portal have a sort or filter applied? 

[Montana50]

Thanks Fitch,

I made a new layout and new portal, even new relationship.

Now we have the dreadful "once in a while" followed by "sometimes".

Oh well - will have to work without dropdown calendar.