Process History View Not Responding Error

Good day to all, I'm new with this system and now my site using DeltaV ver 7.4.1.

Now we facing problem with our operator station. Our PHV always not responding after open the program or open up a chart take a longer time for the chart or event to appear (5-10 minutes) then not responding back.

1. How we open the PHV?

  • From START à DeltaV a Operator a Process History View
  • Via PHV button in face plate
  • Via PHV button in toolbar
  • Via a configured button on a custom graphic

2. What type of history view is being opened?

  • Chart only

3. How many PHV windows are open?

  • Normally 2 to 6 chart in one time

Your support and detail are highly appreciate. Forgive me if this subject have been highlight but still I can't find any solution with it.