As many know, FSX has an issue where you move the mouse on the screen, and your framerate drops quite a bit. After a few seconds of not moving the mouse, the cursor disappears and the framerate returns to normal.

 

I've been doing some searching on this, and I found something that may help to lessen the effect of it.

 

FSX uses a software cursor, which is tied to its framerate, and the mouse pointer is calculated by the CPU. Prepar3D uses a hardware cursor which is not tied its framerate, rendered by the GPU, and thus has no performance impact.

 

With that said, I tried some tests.

 

-Lock framerate at 30 FPS

-Adjust sliders to maintain 30 FPS or higher.

 

If you move the mouse on the screen, there shouldn't be a FPS hit when moving the mouse.

 

However, if you run framerate at unlimied, and have very high settings in FSX, you will notice more of a framerate drop with the mouse. When running with unlimited, I've noted drops as high as 15 FPS. The higher the sliders, the higher the drop I guess.

 

I tried putting most of the sliders up and with the framerate locked at 30 FPS moving the mouse only caused a 5 FPS drop, compared to 15 FPS with unlimited.

You can eliminate mouse reduction in fps instantly by pressing ALT to bring up the menu bar then place the mouse arrow on that menu strip. Instant recovery of frame rate.

Thanks Robert. I guess before I was clicking on items in the cockpit to change altitude, etc, when I should have used the FSX menu>Views>Instrument Panel>EFIS and MCP (left) option. Or whatever menu I need.

Thanks Robert. I guess before I was clicking on items in the cockpit to change altitude, etc, when I should have used the FSX menu>Views>Instrument Panel>EFIS and MCP (left) option. Or whatever menu I need.

When you are done with the mouse, shove it in the top left corner of your screen.