Does personalization that changes meta data display in SERPs impact SEO?

[NStarJM]

My company has been rolling out personalization at the page level across our site using behavior paths embedding content from cross pathed pages as well as customer journey mapping. The dynamically generated content doesn’t change the URLs. In the SERPs I’m seeing that our title tags and meta descriptions also seem to be dynamically generated even though we have these elements crafted.

The way our elements are crafted:

• Title tag: descriptive Keyword rich phrase | Brand
• Meta description: Keyword rich, grammatically correct description tied to title tag and page content for consistency.

I search a specific URL:

• Title tag display: Keyword rich phrase | Brand – Brand
• Meta description display: Random content pulled from the page

I search a phrase that includes Brand + keywords in the URL:

• Title tag display: Title tag we crafted
• Meta description display: Meta description we crafted

I search a phrase that includes Brand + keywords in the title tag:

• Title tag display: Title tag we crafted
• Meta description display: Random content pulled from the page

Does Google crawl the page and digest the title tag and meta description we crafted? Or is Google going to ding us for having the brand twice, exceeding the length of the title tag, etc.? I have been searching the interwebs, forums and the cosmos, but the only information I’m finding is related to the fact that URLs are changing and how that would impact SEO. That’s not the case for us. Thoughts on how all this is impacting our SEO efforts?