Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.
Only about 61% of the final above-the-fold content could be rendered with the full HTML response.
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 62.7KiB (66% reduction).
Compressing https://www.norisbank.de/feedbackmanager/scripts/nb/jquery.js could save 36.6KiB (65% reduction).
Compressing https://www.norisbank.de/feedbackmanager/scripts/nb/plugins.js could save 17.3KiB (72% reduction).
Compressing https://www.norisbank.de/feedbackmanager/styles/nb/styles.css could save 3.4KiB (70% reduction).
Compressing https://www.norisbank.de/feedbackmanager/scripts/nb/modernizr.min.js could save 3KiB (53% reduction).
Compressing https://www.norisbank.de/feedbackmanager/?id=1380&…e&width=770&height=470 could save 2.4KiB (58% reduction).
Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.