Bug 430143

Summary: Gwenview zoom is slow on Wayland
Product: [Applications] gwenview Reporter: Rainer Finke <rainer>
Component: generalAssignee: Gwenview Bugs <gwenview-bugs-null>
Status: REPORTED ---    
Severity: normal CC: nate
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Rainer Finke 2020-12-08 11:35:20 UTC 
When using the zoom slider on the bottom right in Gwenview 20.11.90 on Wayland, the zoom is often delayed and really sluggish. If I use the mouse wheel (enabled in settings) to zoom, it works almost instant.

STEPS TO REPRODUCE
1. Open picture in Gwenview
2. Zoom with slider

OBSERVED RESULT
Zoom is slow

EXPECTED RESULT
Zoom works instantly and fast

Operating System: Arch Linux
KDE Plasma Version: 5.20.4
KDE Frameworks Version: 5.76.0
Qt Version: 5.15.2
Kernel Version: 5.9.12-arch1-1
OS Type: 64-bit
Processors: 24 × AMD Ryzen 9 3900X 12-Core Processor
Memory: 31.4 GiB of RAM
Graphics Processor: AMD Radeon VII