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Please make sure you do not have any add ons or plugins that could be affecting your install. I do not see any FPS drop with either plane in a clean install. Provide the exact steps you take to see the issue and a copy of the log.txt to the bug reporter so we can track this issue.
Using Cessna 172SP (default) when I turn on Avionics (gps I think is the problem) I get a drop of FPS from 44 to 20.
Doing a testing with MD 82 I found similar problem with FMC. If I leave both FMC at INDEX screen I get 50 FPS (I've setted with all settings on minimal). But if I change their screen to some other function I get a big FPS drop.
FPS drops changes between different screens.
Steps= Graphics settings all minimal. FOV 83.5
No plugins nor weird devices. Only to custom made HIDs.
Meteorologic: Downloaded automatically (my bad).
Time: around 7 am local time.
2) Turn APU on and connect its bus bars
3) I get FMC and instruments online.
4) Switch both FMC at INDEX screen. 51fps.
5) Switch one to STATUS (Pilot). 18fps.
6) Switch the second one to STATUS. 10fps.
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