How do I decide if I should pull roll my retirement account from my old job into the one at my new job? (Federal to private sector)

I have a TSP account with all my funds in a Roth account. There is a significant amount of matching but I am vested. I left federal service last year and now have a private sector job with a 401k (I split it between Roth and traditional). I am wondering if I should roll the TSP funds into my 401k. I've been reading that the TSP funds are having some problems but I'm not really sure what that's about.

How can I tell if that's a good decision or not? What information should I gather about my new job's 401k? Does it matter that all my TSP money is in a Roth, but some is matched funds? What am I forgetting to think about right now?

In case this matters, I am in my 30s and my TSP Lifecycle funds are for 2050. TIA for your insight.