[Libreoffice-bugs] [Bug 140494] New: Typing lag--Input lags very far behind keystrokes

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=140494

            Bug ID: 140494
           Summary: Typing lag--Input lags very far behind keystrokes
           Product: LibreOffice
           Version: 7.1.0.3 release
          Hardware: All
                OS: other
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: LibreOffice
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: adcastelletto at gmail.com

Description:
I'm running !Pop OS 20.10 and Libreoffice 7.1. However, this problem was been
with me since somewhere in Version 6. My hardware is Ryzen 7 37600 processor
with 16 Gb and an Nvidia GeForce GTX 1660 Ti Mobile graphics processor. 

What happens is that when I type in any LibreOffice application, there is a
long lag between when I hit a key and the letter or number appearing on screen.
It is very pronoucned in Calc, but also noticeable in Writer. With an empty
Writer document, the typing looks just fine until about 40 characters in, then
the lag shows up and increases as I type. I can see a lag between keystroke as
long as five seconds or even more. I installed FreeOffice to check whether the
issue is with my system or hardware. There is no lag in FreeOffice nor in Abi
Word. This seems to only happen in Libreoffice. I tried disabling OpenCL,
disabling Java, and increasing the application memory. None of this fixed the
issue. Oddly enough, when the Nvidia driver is disabled, things work fine;
there's no lag. This appears to be some kind of compatibility issue with
Libreoffice and the Nvidia graphics card. 

Steps to Reproduce:
1.Open Writer or Calc and start typing. The lag shows up right away.
2.
3.

Actual Results:
For me, all it takes is starting Writer or Calc and typing something into a
document or spreadsheet cell. I noticed this first with a complicated financial
spreadsheet. 

Expected Results:
I saw increasing lag between my keystroke and the characters I typed showing up
on screen. 


Reproducible: Always


User Profile Reset: Yes


OpenGL enabled: Yes

Additional Info:
There should be no noticeable delay between hitting the keyboard and seeing
text or numbers appear on screen.

Note, although Open GL is currently enabled, I have tried disabling it to no
avail.

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