Bug 124968

Description:
Using either Text Doc, Spreadsheet or Presentation, normal operation is very slow to the point of being unusable. Simply scrolling the window on a new document in any app is very laggy. I checked the CPU usage, and it spikes to 50% very quickly. Was trying to create a slide presentation of 20 slides and some small images (appts 8Mb in total) and the CPU was sitting around 100%. It seems to be a core UI issue across all Apps I have used.

I have just bought a new 2019 27" iMac, 32GB, 2TB SSD. Clean install with Mojave. Clean install of LibreOffice 6.2.3.2. Am running it side by side with my old 27in iMac, which does not show the problem. Seems to be a Retina issue?

Note: I can't select checkbox "Use Hardware Acceleration" it is greyed out and unchecked.

Steps to Reproduce:

1.Open any doc, eg a spreadsheet
2.Fill in a column worth of numbers, anything really.
3.Scroll up and down or left and right, very laggy.
4.Also watch CPU usage while doing this. 


Actual Results:
UI responsiveness is very slow.

Expected Results:
UI responsiveness not be very slow.


Reproducible: Always


User Profile Reset: Yes


OpenGL enabled: Yes

Additional Info: