Thanks for your feedback. It's really weird though because for me on a laptop, everything is butter smooth. Even the parallax in the header. So I wouldn't know where those performance issues originate from. Would you know a way to troubleshoot these and solve them? It's mostly pure Bootstrap CSS with the addition of CSS animations. Nothing fancy or strange. Except for the parallax, but that's another story. Inputs and dropdowns should all be very smooth and reacting instantly.