I decided to do a run of Planescape yesterday, but when I install the Widescreen mod and set it to 1920x1080, the native resolution of my monitor, the game area is scaled off the bottom of my screen, and also off to the right. I can't see the dialogue options as a result.

It also causes the game to run badly, and stutter. The intro scenes are split like there is a refresh rate issue.

I decided to try it with Icewind Dale, and had the same result, but enabling the Direct 3D option in the config improved performance but left me with an incorrectly scaled game window.

Anyone have any ideas what the issue might be? I am running an RX580, with the resolution set to 1080P.

I also have two monitors, if that is a potential issue. Both are 1080p.

Thanks for the suggestion. I'm not sure what actually resolved the issue, but firstly I realised that I was using the copy of the game from the old DND Anthology, and not the Gog release which I also have, so I installed the Gog version, tried the 1280/1024 that my monitor supports and it's all working fine now. Thanks for the help.