[2022] Anno 1800 graphical glitches when GSync is activated

Dear Anno 1800 Community,

I'm experiencing a rather weird bug related (I believe) to Nvidia Gsync.
I have a laptop running Windows 11 64bit with AMD Ryzen 5 5600H, Nvidia RTX 3700, 16GB RAM. My specs are quite okay to play the game, but since the framrate drops significantly in big cities, I want to play activating Gsync on the RTX 3700. But when I activate Gsync and pan the camera over coastal regions, there is irregular glitching of textures. To specify, it's not the entire screen, looks more like the outline of buildings/the coast, and it seems to only appear along coastal regions. This happens both in Directx 12 and 11, but ONLY when Gsync is activated. If I force Gsync off in the Nvidia system control, then the glitches completely disappear. In other games, Gsync seems to work without problems. I have the most recent Windows updates and Nvidia drivers (including forced reinstall deleting all settings), verified Anno game files, deleted Ubisoft Connect cache, but no success so far.

I hope I have not forgotten any info, otherwise please let me know. I would greatly appreciate any suggestions on how to solve this.

I uploaded a 20sec clip of the glitches here (especially visible in the first 10sec):

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My savegame is available here: https://1drv.ms/u/s!AjCCba_8YoFfg-pn0ei3TGu2z4rZbA?e=a8avnh
My graphics settings (displayed in English, but I play in German) are shown below.

Hello @alexcurse15 thank you for getting in touch with us and for providing these settings and clips, they are very helpful to us to help you troubleshoot this issue.

I can see the black glitching effect in the water as you pan your screen about.

As you currently have the game set up with 'custom' graphic settings, can you instead please change the 'graphic quality' setting to low, without adjusting any other values and test the game on this preset? Next, please test the game on medium, then high, then very high by changing the 'graphics quality' setting again.

This will allow us to check what default presets you experience this graphical glitch on in particular, and this may help us work out if one of the other graphical settings is causing this issue, by process of elimination.

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