[kde] [Bug 426580] Random Freezes 20.04

[Scott]

https://bugs.kde.org/show_bug.cgi?id=426580

--- Comment #16 from Scott <shagooserver at gmail.com> ---
I did some more tests on large files and discovered that there is indeed some
problem with Kubuntu that is directly affected by what size file it is working
on. For the tests I used MKVtoolnix GUI Ver 50 once on Kubuntu 20.04 against
the same files and MKVtoolnix on Windows 10 using the same hardware, including
disks. The test involved re-muxing a video file from an m2ts container to an
mkv container, therefore the data of the movie was not changed. File size is
output size. This is repeatable.

File               Time
Size     Windows         Kubuntu
1GB             11 secs           7 secs (45 min TV show)
6.2GBs   2 mins 23 secs   2 mins 30 secs (typical DVD)
18.8GBs  6 mins 43 secs  38 mins 45 secs (HD Blu Ray)
43.4GBs 14 mins         172 mins         (UHD Blu Ray)

As would be expected the time increase for Windows is fairly linear being
dependent on file size whereas Kubuntu needs fixing.

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