Speed Optimisation for CS-Cart Site

My CS-Cart store on onlinedelivery.in has gradually slowed to a crawl over the past year, even though nothing new has been installed. The sluggishness is felt everywhere—catalog pages, checkout, and the admin panel alike—so it is clearly a site-wide issue that touches both the front-end shopping experience and back-end management tasks.

The shop runs on a GoDaddy VPS (8 vCPU, 16 GB RAM), so there is enough raw power on paper; I need a specialist who can pinpoint why that power is not translating into fast page loads and then apply the fixes. Typical trouble spots might include database queries, cache configuration, server-level tuning, or template bottlenecks within CS-Cart itself—whatever it is, I want it identified and resolved.

Deliverables I expect
• A concise audit report highlighting the main performance bottlenecks (server, database, code, or theme).
• Implementation of optimisations—database indexing, PHP/OpCache tuning, Redis or Varnish setup, image and asset compression, or other CS-Cart-specific tweaks as required.
• Post-optimisation benchmarks showing measurable gains (e.g., TTFB, full load time, PageSpeed/Lighthouse scores) for both customer-facing pages and the admin area.
• A short hand-over note so future updates do not undo the speed gains.

If you know CS-Cart inside out and can demonstrate previous performance wins, I’m ready to move quickly.