How else to optimize Opencart 1.5?

Question

opencart

Hello! We have an online store with 25524 products. Categories of goods are loaded for a terribly long time, I have already removed the number in categories and much more that I found on the advice from the search engine.
What else can I do? I'm already at a dead end.
Website: http://egoryevsk-stroymaterialy.rf

Answer 1

For now, I close the question as the speed already satisfies.
What I did: Changed the driver to MySQLiz https://opencartforum.com/files/file/1703-uskoreni... Followed
the guide: forum.opencart-russia.ru/threads/uskorjaem-opencar...

Answer 2

Only the main categories slow down, which means there is a count of goods or something else in the main categories from subcategories, make changes in the controller so that categories of the 1st level do not count goods and do not display them at all.
And first of all, they take the cheapest hosting for the store, you guys make money on this, so take normal at least VDS hosting with ssd or nvme for your offspring