ID 215160 - Exporting an expression linked Transform node from a Tracker can cause performance issues in the UI

Problem summary
Exporting an expression linked Transform node from a Tracker can cause performance issues in the UI.

Customer reported version

N/A

Customer reported platform
Windows 10

Steps to reproduce

1) Open Nuke.

2) Read in some footage.

3) Create a Tracker, and track a point across a number of frames.

4) Under Export, select Transform (match move) and press create. Exporting several Transform nodes here may make the issue easier to see.

5) Open the Transform node(s) in the Properties panel.

6) Create another node, like a Grade node, and move one of its floating point sliders. You should see that this is quite laggy.

Other things, like shake-to-disconnect in the Node Graph will also show this problem.

7) Close all of the Transform nodes in the Properties panel, and repeat step 6. The UI should feel more responsive.

Expected behaviour
what were you expecting to happen

Actual behaviour
what actually happened

Workaround
The lag does not seem to occur after closing all of the Transform nodes in the Properties panel. Alternatively, exporting with the Transform (match move, baked) option may help as well.

Reproduced by support
This bug has been reproduced in:
Nuke 15.0v4 - Windows 10 - macOS 12 (Monterey)

Nuke 12.0v1 - Windows 10 - macOS 12 (Monterey)

Earliest version tested
Nuke 12.0v1 
- This issue appears to be in all tested versions of the product