exeodus

Are you overclocking your CPU or GPU, or both?

Hopefully you still have your 5.3 install package. LM only lets you download the latest release from the website for each version that you purchased.

I believe you experiencing a known issue with the area around Clacton (EGSQ), which for me has caused the exact same symptoms you are having in P3D V3, V4, and V5. I used to know what caused it but I don't remember what it is. But the moral of the story is this is a P3D issue, nothing to do with your system.

How does that work? Thanks,

P3D is not a true fullscreen program, it is actually borderless window which may not work with Smooth Frame.

If you select Ultra shadow distance settings in V5, it also will eliminate this issue.

If you have FXAA on, turn it off and see if that fixes it.

The exterior dynamic lights do work in V5, but not very well. There are no interior dynamic lights, as the used Realight, which is not compatible with V5. They are just textures but do not look very good. I only fly it in daytime to avoid these issues with the 717.

You can try to go into the main sim folder, open "redist", then "Interface", then trying reinstalling simconnect via the ESPv1 folder.

I agree with Maxime. 5.3 is far more stable than 5.1 was, and the EA enhancements are much improved. A well worthwhile update.

If you use ORBX FTX scenery, make sure to reinstall the ORBX Libraries and verify the files for any regions that you use.

You can try to run a repair on the client and content portions of the P3D installer to see if it fixes it.

Are you using a ORBX region in that area? If so, look in the scenery folder for that region and .off to the end of any file that contains KSEA.

Believe it or not the keyboard, mouse, and or joystick can cause random issues like this. I would try to change each out with a different unit (keyboard/mouse), and try to keep the joystick unplugged and use a different joystick or gamepad if possible to see if it eliminates the issue.

It has been like this since the FSX days, and many of their sceneries for P3D are still based on FSX files. For example PHNL will have most objects floating above the ground if you use 2M mesh. Switching back to 5M fixes the problem. Also causes issues with KDFW. Here is a link with more information: http://www.fsdreamteam.com/forum/index.php/topic,24718.0.html