ID 443313 - GPU performance spikes when moving the mouse cursor in the Canvas window from the Node Graph with Pause Canvas enabled.

Problem summary
GPU performance spikes when moving the mouse cursor in the Canvas window from the Node Graph with Pause Canvas enabled.

Customer reported version
mari.4.6v4

Customer reported platform
windows10

Steps to reproduce

1) In Mari, open the Example Head project.

2) In Windows, open the Task Manager and select the Performance tab.

3) Place the applications side-by-side to view one another at the same time

4) In Mari, move the mouse cursor over the Node Graph and use the mouse wheel to zoom in/out, observing performance in the GPU Task Manager.

4) Move the mouse cursor over the 3D Viewer and observe GPU performance.

Expected behavior
The mouse cursor should only redraw the canvas when a change occurs.

Actual behavior
The canvas is being drawn when moving the mouse cursor over the Viewer, even while being used in the Node Graph.

Workaround
There is no available workaround at this time.

Reproduced by Support in

Mari 4.6v4 - Windows 10

Unable to reproduce bug in:
Mari 4.6v3 - Windows 10

Earliest version tested
Mari 4.6v3 - The Pause Canvas feature did not exist before this version