Question: MacOS Sierra Sticky Keys Timing.
I really wanted to add information to this thread: https://discussions.apple.com/thread/7687205
Unfortunately, Apple believes people should only be able to help each other for a short period of time.
I'm not able to add an answer to the thread, really sad.
It was really interesting that another person having the issue (https://discussions.apple.com/profile/axyzh and the OP https://discussions.apple.com/profile/marnuhope hope my link somehow gets your attraction) is German as me and we developed the same typing technique for which Sticky Keys seems to have been a really useful feature.
As I'm a developer myself I contacted Apple and tried to get an answer via their bug reporter (Bug IDs 39265185 and 44797395).
Finally I got an answer from them and it will be as disappointing to you as it was to me.
They simply don't care:
Thank you for your feedback, it is noted. Engineering has determined that there are currently no plans to address this issue.
We are now closing this bug report.
If you have questions or comments about the resolution, please update your bug report with that information so we can respond.
So to everyone wanting to write fast on macOS since 2016: You're out of luck, try Linux.
Edit: I cannot edit the title of this post, it's from Sierra ongoing, including High Sierra and obviously Mojave as well.