I am having a problem with very poor framerate, but only when using any version of FG 2020.x. FG 2019.x works with no problem, but release version or nightly 2020.x (tried up to 2020.2.1 nightly) has this issue.
System is running Mac OS 10.14.6. Quad core i7, intel integrated HD Graphics 4000, 16GB RAM. I do know not to expect miracles from Intel graphics, but the same config is playable on FG 2019. Running full screen 1920x1080.
Issue shows as very low framerate on screen (around 1-5 fps), but the framerate indicator on bottom right of screen will read much higher (20-25 fps), and framespacing of about 65-70ms.
I have gone through the troubleshooting viewtopic.php?f=37&t=18951 and it seems to be independent of aircraft or airport but gets much worse when there is urban texture visible.
I have tried using each renderer (no change) and reducing the complexity of displayed items in the view->rendering menu (no change).
I have tried each version of FG, deleting the FG folder after each clean instal to make sure no preferences are re-used. The only settings I have changed from default when doing this is changing from default window size to full screen (makes it worse), turning on framerate and framespacing display, and adding FG default hanger for downloadable aircraft.
No additional command line settings.
The Mac console shows the following errors under 2020.x but not 2019.x (where everything runs fine)
- Code: Select all
fgfs LSExceptions shared instance invalidated for timeout.
WindowServer Surface testing disallowed updates for 10 sequential attempts...
WindowServer Surface test allowed updates after 19 attempts (76 ms)
I wonder if this is something specific to the Mac version of Flightgear, but have posted it in graphics until that is ruled out.
Thankyou for any help.