Optimize HTML Dashboard & WebSocket [Chennai-based freelancer is preferred as a visit to the customer's site may be necessary]

[Chennai-based freelancer is preferred as a visit to the customer's site may be necessary] My custom HTML dashboard is almost production-ready, but two areas still hold it back: WebSocket data transfer errors and overall front-end performance... (Budget: ₹1500 - ₹12500 INR, Jobs: CSS, Documentation, Frontend Development, HTML, HTML5, JavaScript, PHP, Web API, Web Application, Web Development)