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After upgrading to Odoo 17, I’ve noticed a significant slowdown in loading times, especially in the Sales and Inventory modules. Has anyone else faced this issue? Any recommendations for optimization?

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Did you manage to fix the problem?

I've been experiencing slowness on version 18 since the upgrade

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✅ 1. Review Server Specifications:

Ensure the server meets the minimum recommended specs:

  • CPU: 4 cores minimum (8+ preferred for heavy usage)
  • RAM: 8GB+ recommended
  • Disk: SSD with high IOPS
  • PostgreSQL: At least v13 or higher

✅ 2. Check Custom Modules:

Outdated custom modules from older versions can:

  • Slow down views and reports
  • Break lazy loading
  • Cause inefficient SQL queries

Use the Odoo Profiler (Developer Tools > Performance) to identify bottlenecks.

✅ 3. Enable and Tune Caching:

Use ir.config_parameter to enable:

  • QWeb caching
  • Asset bundling
  • DB and HTTP caching

Activate --workers in production (for WSGI multiprocessing) instead of using --dev mode.

✅ 4. Optimize PostgreSQL Configuration:

Fine-tune PostgreSQL using:

  • work_mem = 64MB
  • shared_buffers = 25%-40% of RAM
  • effective_cache_size = 70%-80% of RAM
  • Install pg_stat_statements to monitor heavy queries

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