Hi Umberto,
In the "history" of this topic I tested the following situations:
Clean P3DV41, default sceneries (scenery.cfg) with content, all add-ons (add-on.xml) with content, FSTramp on, AS16 on, GSX on = 10 FPS
Clean P3DV41, default sceneries (scenery.cfg) with content, all add-ons (add-on.xml) with content, FSTramp on, AS16 off, GSX on = 10 FPS
Clean P3DV41, default sceneries (scenery.cfg) with content, all add-ons (add-on.xml) with content, FSTramp off, AS16 off, GSX on = 10 FPS
Clean P3DV41, default sceneries (scenery.cfg) with content, all add-ons (add-on.xml) emptied, FSTramp off, AS16 off, GSX on = 10 FPS
Clean P3DV41, default sceneries (scenery.cfg) emptied, all add-ons (add-on.xml) emptied, FSTramp off, AS16 off, GSX on = 10 FPS
Clean P3DV41, default sceneries (scenery.cfg) emptied, all add-ons (add-on.xml) emptied, FSTramp off, AS16 off, GSX off = 60 FPS
Clean P3DV41, default sceneries (scenery.cfg) with content, all add-ons (add-on.xml) with content, FSTramp on, AS16 on, GSX off = 60 FPS
Clean P3DV41, default sceneries (scenery.cfg) with content, all add-ons (add-on.xml) with content, FSTramp on, AS16 off, GSX off = 60 FPS
Clean P3DV41, default sceneries (scenery.cfg) with content, all add-ons (add-on.xml) with content, FSTramp off, AS16 off, GSX off = 60 FPS
Clean P3DV41, default sceneries (scenery.cfg) with content, all add-ons (add-on.xml) emptied, FSTramp off, AS16 off, GSX off = 60 FPS
Clean P3DV41, default sceneries (scenery.cfg) emptied, all add-ons (add-on.xml) emptied, FSTramp off, AS16 off, GSX off = 60 FPS
Clean P3DV41, default sceneries (scenery.cfg) emptied, all add-ons (add-on.xml) emptied, FSTramp off, AS16 off, GSX on = 10 FPS
ON = program running or via addon organizer entries active
OFF = program not running or via addon organizer entries deactivated
with content = all bought scenery content in the XML or CFG file present or active via addon organizer
emptied = all bought scenery content in the XML or CFG file deleted or deactivated via addon organizer
Did this also with a clean install with P3D42 client reinstall or/and content reinstall.
I also renewed my video drivers to the latest versions or tested with the earlier version when I didn't had the "10 FPS" problem. No luck in both situations.
I have Win10, 64 bit, latest april update. I also tested without the april update. In both situations see result above.
I have 2 video cards, an GTX1070 and a GTX660
I have 5 monitors, all connected to the cards
I have 16 Gb memory installed
I have a 3 Tb SSD drive, a 250 Gb and a 500 Gb ATA drive
I have Z270X Ultra Gaming motherboard
I have a Intel® Core i5-7600K, 3,8 GHz (4,2 GHz Turbo Boost) socket 1151 processor (FC-LGA4, "Kaby Lake-S") processor
All drivers are up-to-date.
And the last test, see my post of yesterday, with my question "how do I get rid of the anoying error message without updating via the FSDT Live Update" icon on my desktop?
Do you need more tests? Or other situations?