Severe Lag in Native Image Occlusion Editing – QtWebEngineProcess Spike (Anki 25.02.1 Qt6)

Anki Help
1

Hi everyone,

I’ve been facing a frustrating lag issue when using the native Image Occlusion feature in Anki. Specifically, any operation like creating new masks, editing existing ones, grouping/ungrouping, etc., becomes extremely slow and laggy. This happens as the number of masks increases.

However, when I open and review the same cards in AnkiDroid, there’s no lag at all — everything works smoothly.

Here are some relevant details:

  • Anki Version: 25.02.1 (Windows, Qt6)
  • OS: Windows 11
  • Hardware: Intel Core i3 (3rd Gen), 8GB RAM
  • Also tested on: Intel Core i5 (6th Gen), 16GB RAM – same issue
  • Tried downgrading to Qt5 version — did not help
  • Also tested Anki on Linux — same problem
  • Noticed during lag: QtWebEngineProcess.exe shows high CPU/memory usage

Has anyone else experienced this issue with Image Occlusion? Any suggestions or workarounds to reduce the lag? I’ve searched around but haven’t found a solid solution yet.

Thanks in advance!

1 Like
2

Tried Anki 25.02.1 on Linux Mint 22.1 same problem.

Tried Image Occlusion enhanced , everything works smoothly.

Currently, I’m using Windows Subsystem for Android (WSA) to run AnkiDroid natively on Windows 11, and it runs very smoothly. However, I would really like to return to using the Anki desktop version, as it offers more features and a better workflow for my needs.