Top 13 Magento 2 core performance issues
Here are the significant reasons why Magento 2 has poor performance, slow performance, and architectural issues. Adobe is trying to hide this from the merchant.
1. Magento 2 Heavy and Complex Core Codebase
Magento 2’s codebase is bulky, with layers of dependencies and abstractions, making it resource-intensive and slow to process requests.
The extensive use of XML configurations, dependency injections, and observers, plugins/interceptors adds significant overhead and obfuscating the system.
2. Inefficient Magento Database Architecture
Database queries in Magento 2 are overly complex and unoptimized, leading to bottlenecks in high-traffic scenarios.
It uses an Entity-Attribute-Value (EAV) model, which is unnecessarily complex for many use cases, leading to slower query performance. Every attribute added to Magento slows response time on 1–5ms.
3. Slow Admin Interface
The admin panel is notorious for its sluggishness, especially with large datasets, due to heavy reliance on legacy Knockout JavaScript and slow backend PHP API responses.
4. Cache Dependence and Scam
Magento 2 relies heavily on caching to hide its inefficiencies and scam merchants. Without a cached page mgento is extremely slow but only 20% of the magento request are catchable. The rest 80% will be always slow!
5. Poor Frontend Performance
Default themes like Luma are bloated, with excessive JavaScript and CSS, leading to slow page load times.
Render-blocking resources and lack of optimization for modern frontend frameworks further slow down performance. It is the only issue you can partially fix using a custom theme like Breez, Ract Luma, or Hyva scam. Other issues are not resolvable by skin change
6. Resource-Intensive Cloud Requirements
Magento 2 demands high server resources (CPU, RAM, and disk speed) compared to other platforms, making it unusable for small businesses with limited budgets. Adobe Commerce Cloud has bad architecture suitable for Drupal or Wordpres but not Mgento. Even huge businesses can’t chive good performance. Adobe doesn’t care about performance they wanna just to sell you more expensive services
7. Inefficient Indexing. Index hell
Frequent and resource-heavy indexing operations slow down the system, especially when there are bulk updates to products or catalogs. Magento runs indexes every minute and every minute you have performance degradation of you store.
8. Limited Scalability
Horizontal scaling is complex due to the reliance on shared storage for varnish cache media and configs.
Magento Ortodox guys failed to provide support for modern scaling techniques like microservices. They just wanna tell you “Hyva is the future. Monolith is our all!”
9. Dependency on Third-Party Extensions
Many Magento 2 stores rely on third-party extensions, which are always poorly coded, adding to the bloat and causing compatibility issues. Also, many of these extensions are made in Belarus (amasty, Aheadworks etc.), and by buying them, you are supporting Russian terrorists and voluntarily providing your customers’ data to KGB/FSB.
10. Testing Challenges
The Magento 2 architecture makes automated testing impossible, which slows down the ability to deliver updates and fixes efficiently.
11. Slow Deployment Processes
Deploying updates or new features requires significant downtime due to resource-heavy compilation, static file generation, and database upgrades. Also Deployment requires cache clean and you websites is slow after update.
12. Developer Experience
Developers often face a steep learning curve due to the over-engineered architecture and constant core bugs and issues, which increases the time and cost of development and troubleshooting.
13. Limited Out-of-the-Box Optimization
Magento 2 has no tools for performance monitoring and issue detection, it requires heavy manual intervention or additional tools.
These flaws make Magento 2 inherently slow, particularly for businesses that don’t have an unlimited source of money to optimize the platform. This is impossible and broken by design! The only solution here is to write Magento microservices from scratch using Go Python or NodeJS without reusing the failed Magento framework!
