Right-click the game in your Steam library and select 'Properties':















Once it opens, navigate to the "Installed Files" section and click the "Browse..." button. The Xuan Yuan 3 installation folder opens.:













Once the installation folder is open, right-click on the game executable file and then click on the "Settings" tab. Click Compatibility Mode and select Windows 7 under "Run this program in Compatibility Mode for". Don't forget to check the "Run this program as an administrator" box::





























After that, I didn't have any crashes at all until I've reached the China Episode. It started to crash again, but not as often as before.