Bug 425433 - HTML Preview is slow (for some messages)
Summary: HTML Preview is slow (for some messages)
Status: REPORTED
Alias: None
Product: kmail2
Classification: Applications
Component: general (show other bugs)
Version: 5.15.0
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: kdepim bugs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-08-16 19:19 UTC by Daniel Schulte
Modified: 2020-08-16 19:19 UTC (History)
0 users

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Description Daniel Schulte 2020-08-16 19:19:25 UTC 
SUMMARY
For some messages rendering the HTML preview is slow. After selecting the message it takes about 2.2 seconds (measured with stopwatch) before the message content is visible. If switching between messages the old message content is displayed while the message list already shows the new message as selected.

For some messages it's faster but still takes around a second.
The same message in Thunderbird load with no noticeable delay.

STEPS TO REPRODUCE
1. Open/switch to a message from a sender which is set to display as HTML by default
2. Wait..
3. See that it took some time to display it.

OBSERVED RESULT
Rendering the HTML message is slow.

EXPECTED RESULT
It should be fast :-)

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 5.19.4
KDE Frameworks Version: 5.73.0
Qt Version: 5.15.0

ADDITIONAL INFORMATION
I can supply messages to test with.