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Someone suggested changing power setting from balanc
ed to high performance on my thread but that didn't work for me. Attached is a screenshot showing graphics sliders way down and task manager.
I found I didn't have quite the latest nvidia upgrade/update, did a clean install of that, no difference (if anything slightly slower now!). I also note nvidia does drivers which auto-optimise for loads of games, no chance of xplane collaborating with them?)
Screenshot showing graphs of all 8 processor cores - only 3 seem to be doing much, down to 8 fps in flight at medium settings (and seems to me surprisingly few threads given how much is going on), problem does seem to be new version may have been re-written to use few cores/threads and so doesn't run well on multi-core machines.
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