Does the server crash when generating trade offers?

Question

1C-Bitrix

Hello. There is an online store with goods that have trade offers. Each product has quite a lot of different properties (color of upholstery, pillows, layout mechanisms, fillers, etc.), on average, from 5k to 20k sales offers per product. Lot. When generating sales offers, the site often goes into a 500 error.
The question is, what can this be connected with and what server settings should I pay attention to?
Thank you.