Let's get real here. Is this bad CGI? No way, it's some of the best CGI that has been used in an anime. Is it sometimes noticeable to the point where you can make a comment about it being distracting? Yes, of course!
But here is a really important thing to consider. The guys over at MAPPA only got 8 months to animate the first 16 episodes and already the animators got personal threats on Twitter and other places. This is undeserving of their gargantuan work of delivering on such an amazing series that AoT has been, AND STILL IS.
You can have criticisms of the CGI, but be respectful and understanding of the work that the people involved has made to make this season happen.
And for my part, I can't say anything else that MAPPA has delivered more for each episode, this has been one of the best Manga adaptations I've seen. Every attention to detail that they put in the scenes is fantastic. For example, in the cart the cart titan squad has a group photo hanging on the wall. That's some good stuff right there. If only they get some more polishing done on the environments MAPPA will definitely be on par with WIT.