When should I switch alliances?

Welcome to the forum!

No, you’re very definitely not gettting the best rewards, even being A+, because you’re maxing out at 4* titans.

Ideally you want to be in at least loot tier 9, which gives 3 rolls for ascension mats. That’s A+ on a 6*, A on a 7*, B on an 8*, or C on a 9*.

Here’s how titan loot tiers work:

Here’s a similar discussion too:

(@Kerridoc @Rook Possible Merge of Topic)