[GREENFOOT-573] Severe UI slowdown over time on Windows
[reported by user Berthed Metz in email]
On Windows, after some time of use speed slows down to unacceptable levels (several seconds delay for keypress and mouse clicks).
Restarting Greenfoot only improves responsiveness for a short time. Needs OS restart to restore.
- Issue type: Bug
- Priority: High
- Fix versions: 3.1.0