Hello I'm playing with all the DLCs except for the last one and the latest community patch. My laptop can easily bear the maximum graphical settings but after something like 70-80 turns the fog of war completely disappears and I experience terrible lag during unit movement.

Is this a known issue? Can you suggest me a solution?

Thank you

Does the Fog stay away on reloading? Can you attach a save?

I tracked down the bug, its an unintended consequence of some bugfixes to fortresses I made with the last version of ELCP (sorry!). Thanks to your save I was able to fix it. What does that mean for you? Well I can offer you the newest beta, which would make your savegame work again. There are only two caveats:

1. While you will no longer see everything, the whole map will still be explored (cant "unreveal" the map)
2. The colors of neutral armies and quest armies will look weird for saves from older versions (new games will be as usual). This is due to some major changes in the background (number of max empires and the color palette has been changed). This has no negative gameplay impact, but it may annoy you.

You can download the beta here:

exe: https://drive.google.com/open?id=1fyomfFCIdFR1kAI6X5qaC1AoctMS7I6X

zip: https://drive.google.com/open?id=1YVglW7plK17PCsgCmwuCb-1UFTSkeqWn

thank you very much, the patch solved every problem!

(about your concerns those are not an issue for me at all)

It worked, thanks!