The back office is extremely slow.
Common causes: (1) Too many modules with back-office hooks — each one adds load to every admin page. (2) Debug mode left enabled — this adds massive overhead. (3) MySQL slow queries — check the Symfony profiler. (4) Large product catalog with many combinations slowing down listings. (5) Server running out of RAM. Quick wins: disable debug mode, enable OPcache, and check which modules are loading on every admin page via Design → Positions → displayBackOfficeHeader.
Learn more: PrestaShop performance guide.
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