[Libreoffice-bugs] [Bug 131408] high-res or skia or non-default-scaling problem?: remarkable slowdowns in Calc for scrolling in ver. 7.0

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=131408

--- Comment #11 from b. <newbie-02 at gmx.de> ---
hand stopped thus not very precise measurements with ver: 

Version: 7.0.0.0.alpha0+ (x64)
Build ID: 61d8d991a27c3bfe70e3b8d3b4ce4d8a41d18d2d
CPU threads: 8; OS: Windows 6.1 Service Pack 1 Build 7601; UI render:
Skia/Raster; VCL: win; 
Locale: de-DE (de_DE); UI-Language: en-US
Calc: 

count of rows for scrolldown with <page-down> and <shift> within 20 seconds,
'keyrate 200 15', thus 66 keystrokes per second after 0,2 seconds delay, 
4k screen, 3840x2160 mode, user defined font size 225%, 
graphics card nvidia Quadro M4000M, 
LO fullscreen, zoom factor 100%, 46 rows per page visible, empty sheet: 

use OpenGL for all rendering:    ~53.000 rows, 
no significant change with: 
'use anti aliasing' active 

no view option set:              ~38.000 rows, 

use hardware acceleration:       ~31.500 rows, 

use Skia for all rendering:      ~13.000 rows, 
no significant change with 
'ignore Skia blacklist', 
'force Skia software rendering', 
or both, 

it is possible to activate openGL and! Skia, it's as slow as Skia, 

hope it helps ...

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