ID 316699 - Denoise2 in Nuke 11 is significantly slower in performance compared to earlier versions of Denoise.

Problem summary
New Denoise 2 in Nuke 11 is slow compared to the original Denoise. 

Customer reported version
nuke.11.0v2

Customer reported platform
windows10

Steps to reproduce

1) Launch Nuke 11.0v1 and Nuke 10.5v4 and Read in test footage, 1920x1080 400 frame exr sequence. 

2) Create a Denoise node and analyze footage and then play through it on the timeline in both versions of Nuke. 

Result: Denoise in Nuke 11 is slow compared to Nuke 10.5

Workaround
Update your plugins and use Denoise 1. 

1) Navigate to the "Other" tab on the left hand column of the Nuke Viewport and select "All Plugins" and then "Update"

2) In the new "All Plugins" directory within the same column, navigate to the "D" folder and select "Denoise" instead of "Denoise2" 

3) Denoise the footage using a normal workflow as demonstrated in the documentation. 

https://help.thefoundry.co.uk/nuke/11.0/#reference_guide/filter_nodes/denoise.html?

Reproduced by support
This bug has been reproduced in:
Nuke 11.0v2 - Windows 7 - MacOS 10.13 - Linux CentOS 7
Nuke 11.0v1 - Windows 7 - MacOS 10.13 - LinuxCentOS 7


Earliest version tested
Nuke 10.5v6: Denoise2 did not exist prior to that. 

Expected behaviour
Denoise2 would work correctly as expected with similar performance as the original Denoise.

Actual behaviour
Denoise2 works, albeit significantly slower than the original Denoise.