Online Models (MakerWorld) tab causes severe single core WebKit CPU saturation while scrolling Linux AppImage

### Type of issue Performance / lag (slow, stuttering, or laggy UI) ### Bambu Studio Version BambuStudio_ubuntu24.04-v02.07.01.62-202606161952227 (AppImage) ### Where is the application from? Bambu Lab Official website ### OS version Linux Mint 22.3 Cinnamon ### Additional system information CPU: Intel Core i5-12400F Memory: 32GB (adjust if different) Display Card: NVIDIA RTX 2070 Super ### Printer N/A ### How to reproduce 1. Launch Bambu Studio (AppImage) on Linux 2. Click the "Online Models" tab (MakerWorld browser) 3. Scroll down through the model list 4. See stuttering/lag while scrolling ### Actual results Noticeable stutter/hesitation while scrolling. Confirmed via `htop` that a single webkit2gtk-4.1 process spikes to 90-98% CPU on one core during scrolling, while system load average roughly doubles (0.36 → 0.58+). Reproducible every time. Tried the following with no effect on the lag: - GTK_CSD=0 - GDK_SCALE=1 GDK_DPI_SCALE=1 - WEBKIT_DISABLE_COMPOSITING_MODE=0 with __GLX_VENDOR_LIBRARY_NAME=nvidia __NV_PRIME_RENDER_OFFLOAD=1 Also seeing repeated "Gtk-CRITICAL **: gtk_window_resize: assertion 'width > 0' failed" messages in terminal on launch, though these fire before scrolling starts so may be unrelated. Note: A recent release migrated to WebKitGTK 4.1 for Linux compatibility — this lag may be tied to that change. <img width="3768" height="8160" alt="Image" src="https://github.com/user-attachments/assets/50cfdce6-97b4-4b76-9bae-222d9d98eaeb" /> ### Expected results Smooth scrolling through the online models list without CPU spikes or stutter. ### File uploads (project / log / crash dump / performance profile) [bambustudio_log.zip](https://github.com/user-attachments/files/29723961/bambustudio_log.zip) ### Checklist of files to include - [ ] Project file (always) - [x] Log file (always) - [ ] Crash dump / report — required for crash / freeze issues (Windows .dmp / macOS .ips / Linux gdb backtrace) - [ ] Performance profile — required for performance / lag issues