Bug 512221

Summary:	Gwenview very slow to open RAW files since Plasma 6.5 update
Product:	[Applications] gwenview	Reporter:	ChrisC1377 <chris.combes>
Component:	general	Assignee:	Gwenview Bugs <gwenview-bugs-null>
Status:	REPORTED ---
Severity:	normal
Priority:	NOR
Version First Reported In:	25.08.3
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description ChrisC1377 2025-11-16 20:44:57 UTC

Hello,

Since the first update to Plasma 6.5, on Wayland or X11, Gwenview is very slow to open RAW images (RAF for me and my Fuji x-t3 camera), around 8 to 10 seconds for 56 MO (6,384 × 4,182) files. Before the update, it was instantaneous.
While Gwenview is opening the file, CPU usage increases to 100%.

I posted a message about this on KDE Discuss, but got no response.

I made research to see if there are already reports about this problem, messages or bugs, but I found nothing concerning the last version of Gwenview and Plasma 6.5.

Thanks for your time, Chris

Gwenview 25.08.3

Operating System: Arch Linux 
KDE Plasma Version: 6.5.2
KDE Frameworks Version: 6.19.0
Qt Version: 6.10.0
Kernel Version: 6.17.8-zen1-1-zen (64-bit)
Graphics Platform: Wayland and X11
Processors: 8 × Intel® Core™ i7-4790K CPU @ 4.00GHz
Memory: 32 GiB of RAM (31.3 GiB usable)
Graphics Processor: NVIDIA GeForce RTX 3090
Manufacturer: ASUS
Product Name: All Series