I have an integrated card and a dedicated card.
I've followed the very few threads that did what little they could to help run the game, but things just don't work right.

I guess, you are using laptop. With some "smart" feature that chooses graphics card depends on the how much power the program you are running needs. In these case old games, and all browsing stuff is using Intel, while the rest are using dedicated (probably Nvidia card). So to force Sacrifice running Nvidia you have to probably format your HDD so this feature will no longer work or you have to disable bump detail maps in sacrifice graphics options and then your game will not crash at the end of the loading map.

Same issue here, haven't been able to play Sacrifice for 3 years due to this. Nothing seems to fix this.

Nvm, I somehow managed to fix it by using dgVoodoo as explained here : https://www.gog.com/forum/sacrifice/sacrifice_and_scapex_crashinglow_fpsfreezing_on_windows_resolved
Make sure you are not running the game in compatibility mode, and uncheck administrator mode too.

This helped me a lot, i ve set it up to work with the dedicated intel card via dgVoodoo and it works just fine. Thanks.

Intel card is never dedicated card if you have 2...

you might need the disc version as many of the gog versions of games only supports integrated gpus while the disc versions runs on dedicated. i know that to at least be a fact with star wars empire at war but there could be others. on the other hand, sacrifice do not need anything better than an integrated gpu. maybe you need different drivers.