Here are my findings...
1. In the file
"C:\ProgramData\Bentley\OpenRoads Designer CONNECT 10.00.00\Configuration\WorkSpaces\Arcadis-NSW.cfg"
The line number 35 should read like this:
CIVIL_WORKSPACE_TEMPLATE_LIBRARY_NAME = W2B-Templates-B3.itl
…as this is to only set the name and no path is needed.
2. Your Feature Definitions Mesh settings do not include the pointer to their feature symbologies. You missed this column in your spreadsheet. This is why your templates are not showing correct.
3. The slow down of the template editor is because you are including a DGNLib of Subsurface Utilities that has not been converted. It is seeing features in this file and trying to resolve but it can’t.
"C:\ProgramData\Bentley\OpenRoads Designer CONNECT 10.00.00\Configuration\WorkSpaces\Arcadis-NSW\Standards\Dgnlib\Feature Definitions\RMS Subsurface Utilities Feature Definitions.dgnlib"
If you rename that files extension to something like *.old, then the problem goes away. This DGNLib will need to be updated.
4. In the file "C:\ProgramData\Bentley\OpenRoads Designer CONNECT 10.00.00\Configuration\WorkSpaces\Arcadis-NSW.cfg" line # 99 is wrong. It should read like this:
MS_DGNLIBLIST > $(_USTN_WORKSPACESTANDARDS)Dgnlib/Feature Definitions/*.dgnlib
5. When importing the symbologies and features, make sure to always start with a new dgnlib if you are going to do the bulk editing.