What does SGX 2.0 (scalable SGX) sacrifice (e.g., removing integrity tree) in security for better performance （e.g., large EPC size)?

Some [documents](https://systex22.github.io/papers/systex22-final15.pdf) stated that SGX 2.0 (or scalable SGX) cannot support memory integrity protection, is it right? is there some official document that makes clear comparison between SGX1.0 and SGX2.0 from the respective of security and performance?

Thanks.