Hello thunderstreak,
I have had exactly the same problem as you since May 02. With Win10, P3Dv4.5, it happened suddenly. I followed the same procedure, removed the last downloaded addons, went to HF3 but without results, I can only use 5 planes of the whole (almost 100). 4 A2A planes and an Alabeo which is my default plane.
I then installed the v5 on another hard drive. Without any addons, scenery or planes, it works normally. I install the plane with which the problem appeared and again the tornado ...
I am on the fourth reinstallation of P3Dv5. I have a few more planes working but I don't dare to add any more ...
I realized that the phenomenon does not appear if I stay below 200 '. A jet stream at an altitude of 200 'is not common isn't it?
I posted a message on the LM forum on May 08. 1061 views today and not a single answer ...
I don't really know what else to do...
zinj
(Sorry for my bad English...)
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