Mouse Lag on attached screen in macOS Sierra

[Carlo]

Hi All,

To recap these are the issues we're seeing with the developer beta 2:
- Slow on most systems
- Black content when windows are moved from an accelerated framebuffer to a DisplayLink (or other USB) screen. Black goes away refreshing the window contents.
- Permanent wrong colour/corruption on the left side of window titles

If you see anything more please let us know.
We have raised bugs with Apple but as usual we'd like to increase their priority: don't want to get stuck for one year or more like for other OS regressions.
If you see the same things, please do raise bugs at bugreporter.apple.com.

On the bright side Apple has fixed the following:
- The main mirror issues of El Capitan
- Picture in Picture (was still broken in the public beta)

Fixing mirror means that you can go back to version 2.5.1 if you want to try it without all the workarounds we had to put in place.

Best regards,
Carlo