Hi Mico_Nk, there are alot a variants to what makes a webpage load and an application to launch, as software is designed for many platforms and internet speeds. There are some more troubleshooting steps in the article below to help troubleshoot further. [[Firefox is slow - How to make it faster]] If you want to leave feedback for Firefox developers, you can go to the Firefox ''Help'' menu and select ''Submit Feedback...'' or use [https://input.mozilla.org/feedback this link]. (You'll need to be on the latest version of Firefox to submit feedback). Your feedback gets collected at http://input.mozilla.org/, where a team of people read it and gather data about the most common issues.