Investigate Performance Implications of #561

[HurricanKai]

[Perksey]

Note:

• the tenet labels don't mean anything for any non-3.0 issues, as they are not defined until 3.0.
• all issues should have area labels. we're slippy on this, but if ever we do look at the dotnet issue labeller it needs all the data it can get.

[HurricanKai]

I expect no one cares about this, we didn't have any complaints, so closing this.