XEBRA Version 18/10/27 plays a game very slowly

ReactOS Version: 0.4.11-dev-648
Download URL: http://drhell.web.fc2.com/ps1/xebra181027.zip

When I try to play a game via it, the sound and video (which only shows when checking the Use OpenGL checkbox in the Video Output dialog box accessible via the menu item in the View Menu, just installing DirectX 9 and enabling 2D+3D hardware acceleration doesn't get it to display) is lagging because it is using 70-100% of the CPU. A debug log is attached.

EDIT: I replaced the XEBRA.SIM file in its main directory with one I found on a reddit thread which has fixed most of the lag. I also replaced the portcls.sys that ReactOS uses with the one provided by Windows Server 2003 SP1. I have attached the XEBRA.SIM that is being mentioned.