I'm on a PC with Windows 7, i9-9900k, 3060ti, 16g ram, with a 19' 5:4 1280*1024 LCD, and with Supermodel-r867. I find in Sega Rally 2 (at least in the dessert stage) when the crowd along the road take pictures, the game will stutter. [Update: I don't know why, but it got fixed now.

Another issue is about the FullScreen mode. I use the settings:
[ Global ]
XResolution = 1280
YResolution = 1024
FullScreen = 0
However, it will still run in the FullScreen mode.

[Edit: Impoved the content]