Author here. I'm not entirely sure why this project would be of interest, but I noticed it here so figured I'd provide a little more context.
The test suite is small, and there are no concrete results. This is because the very first truly stressful test I got to produced terrible results. Instead of continuing, I began investigating that more closely. I also opened up a developer support ticket (distinct from a Feedback) with Apple. Apple got back to me about 3 day later, pointing out a bug in my use of TextKit 2. I'm a long-time TextKit 1 user, and this stuff is new to me. I also write a lot of bugs.
TextKit 1 is a very fast system. But with this problem addressed, TextKit 2 now outperforms it by quite a bit. From a performance perspective, it seems really good so far.
The test suite is small, and there are no concrete results. This is because the very first truly stressful test I got to produced terrible results. Instead of continuing, I began investigating that more closely. I also opened up a developer support ticket (distinct from a Feedback) with Apple. Apple got back to me about 3 day later, pointing out a bug in my use of TextKit 2. I'm a long-time TextKit 1 user, and this stuff is new to me. I also write a lot of bugs.
TextKit 1 is a very fast system. But with this problem addressed, TextKit 2 now outperforms it by quite a bit. From a performance perspective, it seems really good so far.
If you have any other questions, let me know!