I suppose this message was meant for me even though you didn't reply to mine.

Well, the show switched studios, it was produced by 亜細亜度 (Ajiado) before, now it's Wit Studio. It makes sense that the style'd change.

The most appreciated more or less recent work by Ajiado would be Yubisaki to Renren, which is a slow paced one with a lot of sign language there. The only heavy action title drawn by them I'm familiar with would be Shuumatsu no Izetta, which I can't say I like.

Wit Studio is the one behind AoT, Vinland Saga, Mahoutsukai no Yome and stuff like that, a lot more action focused.

That's pretty much why it looks so different. I also prefer Ajiado style, but maybe there'll be more action scenes this season which they are not that good with? And yes, Wit gets a lot of critique for their CG.