On Tue, Oct 9, 2018 at 3:52 PM Laurent Bourgès <bourges.laur...@gmail.com> wrote: > Peter, what is your hardware & OS info ? It's an Intel core i7-8750H, 8GB RAM, intel UHD 630 graphics Windows 10 Pro 1803 build 17134.320
Note that Java 8 is still 'fast' so there must be some difference between 8 & 11. I saw that on Java 11, the window size was bigger. I assume this is due to the HiDPI support added in Java 9 (my display scaling is set to 125%, which is the 'recommended' setting) Are there any options I can pass to java.exe which would turn off scaling - that might help to narrow down the problem. By the way, I tried it on a Mac, it was also 'fast', so it just seems to be Windows at the moment. I would appreciate it if someone else on Windows could check it out. Thanks, Peter