Hi there, everyone!

This week I installed Empire Earth 3, and everything seems fine, until the first test, through tutorial, to check everything was ok... and it wasn't.

First of all, the Shader Model 3 in Video Options was making the light effects weird, making everything darker and terrain glitched (first image), and I had to switch to 2B.

Later at the test (also ocurring on Skirmish tests), when an AI is set up (or has an army, as for example in Tutorial 3) the performance drops, and the graphic and rendering starts to have a lot of problems, making the game unstable and unplayable, presenting things such as FPS drop, buildings disappearing and so on.

Has anyone here faced the same issues? Is there anything that could be done to fix them?

I tired to run as Compatibility Mode, unchecked every setting on my graphics card, and even set affinity on CPU cores to CPU 0 only (generally this can work for old games, but for EE3 is just a temporary fix and the game becomes unstable after a few moments)

Every support to fix this problem and make the game stable and playable is welcome. Thanks!

Maybe you use Intel's 12th Gen (or newer) CPU with Integrated graphics?

Intel removed support for DirectX 9 (and older) games in their drivers: https://www.tomshardware.com/news/intel-xe-arc-swap-to-dx9-emulation

Even if your PC has two graphics cards (e.g. Intel + Nvidia), it will still force the (bugged) DirectX 9 emulation as Nvidia is Intel-dependent on Optimus computers/laptops.

Maybe you could try to use dxwrapper to fix it: https://github.com/elishacloud/dxwrapper
But I'm not sure if that's enough for their limited drivers.

I'd simply recommend to avoid Intel forever.

Actually no... I changed for a while my PC parts, and opted for AMD setup. Both CPU and GPU are AMD:
Processor: AMD Ryzen 5 5600GT with Radeon Graphics (12 CPUs), ~3.6GHz
Video Card: AMD Radeon RX6600 8GB
Memory RAM: 16GB DDR4

But I'll try the dxwrapper to fix the game! Because it really seems to be an issue with Win 11 compatibility!

I'll let you know once I try this tool.
Thanks so much!

Any luck with dxwrapper?

AMD Graphics Control Panel might also have some special options enabled that are supposed to "enhance" games, but might actually cause issues. So please make sure to check that graphics panel and disable what you find that could affect it.