Optimizing dynamic SERP snippets: how to beat Google's rewrites?

hey folks, i'm running into a bit of a wall with title tags and meta descriptions, especially when dealing with highly dynamic content.

• the usual stuff doesn't cut it: we've got the basics down – keyword research, length optimization, compelling copy – but google's constant rewriting of our SERP snippets is driving us nuts.
• the core issue: we generate thousands of pages for product variations, and while our programmatic title/meta generation is sound, google just often ignores it, pulling irrelevant text or truncating badly. this impacts CTR big time.
• specific challenge: how do you maintain control over your SERP snippets for pages with highly volatile content or user-specific data, without resorting to manual overrides for every single one? we're talking about scale here.
• looking for: advanced strategies, specific tools, or even API-driven solutions to better influence what google displays. any clever workarounds for the rewrite algorithm?

Anyone faced this before?