I'm confronting myself with a very slow admin after upgrading to PS 1.7.5.0 and even on 1.7.6.1, the same problem, when I try to update something from products (for example stock, or description or title) the "save" button takes forever to update the product.
I enabled dev mode, and I get this performance result (when updating attribute stock):
QuotePerformance metrics
221501 ms
Total execution time
From the attached image, "controller" eats up a lot of time, but I don't know what it refers to.
Any ideas why is this happening, the store has around 5500 products with attributes and 60 categories.
Server specs:
Quote
nginx/1.16.1
PHP: 7.2.24
memory limit: 1024M
execution time: 600s
