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I managed to launch the fifth installment of "Heroes" (the "Tribes of the East" expansion) on Windows 11. Before that, I couldn't get it to run – it would display the splash screen and then crash. It turns out that I needed to enable full-screen optimization (in the "Compatibility" tab in the application properties). After launching, the game runs at full speed; even the main menu doesn't lag, and it consumes a lot of graphics resources. However, during this time, the CPU and GPU heat up quickly, and the fans are constantly noisy. I enabled sensors during the third launch and found that the frame rate limit was disabled, resulting in hundreds of frames per second. This creates unnecessary load on the CPU and GPU. So, I enabled a frame rate limit of 60 in the NVIDIA video card settings, and the game runs smoothly. However, this won't save it from lag when panning horizontally or during AI movement on the global map after a few months – that's just how the game is optimized. Overall, the game is highly compatible with Windows 11 and doesn't require compatibility mode. Why? Because it uses the Direct3D 9 library. Minor issues: the cursor flickers slightly, and some tooltips have minor glitches in certain places. Once, after 40 minutes (with the frame rate limit disabled), the game crashed (on the loading screen of the second mission in the campaign for Arantir/Ornella, after the statistics screen). I'm also hesitant to set the graphics to maximum, as there's a chance that the textures will become excessively blurry.
In conclusion: the game (at least "Tribes of the East") is highly compatible with Windows 11.
Have you experienced any serious problems with the fifth "Heroes" game on the latest version of Windows?