In the dgVoodoo Control Panel, try toggling "Enumerate refresh rates" or "Capture mouse" in the General tab.
DgVoodoo 2 alone does not add widescreen resolutions (like 1920x1080) to I.G.I-1. For that, you need a separate patch: dgvoodoo 2 download for i.g.i 1
v2.86.2 - A patch version again. May 11, 2025. dege-diosg. v2.86.2. b721788. Choose a tag to compare. Sorry, something went wrong. In the dgVoodoo Control Panel, try toggling "Enumerate
: Eliminates the heavy frame rate drops common on modern hardware. In the dgVoodoo Control Panel
Project I.G.I. (2000) smoothly on modern Windows 10/11 systems, dgVoodoo 2