Here’s a new one to add the to ‘CoherentGTDraw’ problem that I discovered yesterday … just in case anyone else is looking.
About an hour into cruse, out of the blue my graphics performance tanked to the suspicious 10fps. I tried switching between VR and 2D, turned off clouds and finally put on DEV mode to see the ‘CoherentCTdraw’ in red and the whole sim throttled to death.
‘Aha!’ thinks I, ‘we know the solution to this one don’t we’ and promptly turned off the VR map icon from the tool bar. Imagine my surprise when this made no difference at all.
After a bit more messing, I found that turning off the ATC panel icon in the same way restored the performance. At this point, I also realized that the problem had started when I’d switched to ‘Com 2’ tuned to ATIS at the nearest airport. Then found that I could put the ATC icon back on the toolbar and switch the problem on and off by switching between com1 and com2…
So, if you suddenly find yourself strangled by the CoherentGTDraw problem. Try switching off the VFR map. If that doesn’t work, try switching off the ATC panel.