Chrome DevTools Performance Issue when $nb-enable-css-custom-properties: true

Has anyone else noticed a considerable lag in the performance of their app when operating with $nb-enable-css-custom-properties set to true (which is now the default) AND having the Elements tab open in devtools? When I have it set to false, barring other side effects, the app is snappy and normal response time between Elements tab in devtools window and that of the app rendering. However, when utilizing with mixins that require css custom properties, the significance of the impact on not only the DOM, but also the comms between devtools and the browser cannot be understated. And, if we navigate away from the Elements tab (for, say, Console, Network, etc), all normal functionality is restored. It's the weirdest thing, and have yet to experience with any other library or app.