Description:
After updating to Version 21.0 and all subsequent releases, the application exhibits significant UI latency and rendering delays. The user interface becomes intermittently unresponsive, with interactions (panel updates, tool changes, UI redraws, etc.) taking 30–40 seconds to visually update. This behavior occurs consistently across sessions.
Environment:

OS: Windows 11 Pro — Build 26200.7923
Storage Tested: OneDrive-based project files and fully local NVMe SSD storage (no performance difference)
Systems Tested: Issue reproduced on two separate PCs with different hardware configurations
Application Versions Tested: 21.0 and all newer versions

Observed Behavior:

UI redraws and component updates are extremely slow (~30–40 seconds).
General interface interaction becomes sluggish or temporarily unresponsive.
No improvement when:

Moving project files off OneDrive to a local NVMe drive
Restarting the application or OS
Clearing caches
Testing on a second machine with clean installation

Expected Behavior:

Instant or near‑instant UI responsiveness similar to pre‑21.0 builds.
No dependency on storage location for UI performance.

Impact:
This issue severely affects workflow efficiency—basic tasks become slow and cumbersome, significantly reducing productivity.
Additional Notes:
Based on testing, the problem appears to be directly related to changes introduced in Version 21.0 and later, and not environmental factors such as hardware, storage, or cloud syncing.
Regards,
Eberhard