Thank you. Yeah I think the difference is not very noticeable for smaller models. I just opened a couple of models to see the effect of this. On a 600-element model, I saw little performance difference. On a 1300-element model, I started seeing it. And the difference is more noticeable when running error checks. Additionally, in one test the error check got even slower when both Temperature and Pressure Highlight toolbars were present.

I personally will continue using the toolbars. And when my model gets big enough that I start noticing the performance penalty, I know what to do now.