Hello GOG.

I recently bought a new laptop to replace my aging desktop. So I've spent the past week getting in working order. (Ripping out the pre-installed software, getting avast/spybot/malwarebytes on it, etc.) After that I'm now ready to install some of my old games. I decided to start with Planescape: Torment. But after installing, I found that during gameplay there is this horrible lag that just renders it unplayable.
Luckily, some light googling told me that turning off hardware acceleration would fix the issue. But when I went to Display Setting>Advanced Option there was no Troubleshoot tab, which is were the hardware acceleration option would be.
So I'm in a bind here. I spent all last night googling, but couldn't find were Windows 8 had moved the hardware acceleration option. I really want to play this game, but the lag just makes it unplayable. Does anyone know were the hardware acceleration option is or know of another solution for my problem?

Windows 8 doesn't allow you to disable Hardware Acceleration.
Win 7 didn't either, but you could download the very large DirectX-SDK which allowed you to do it.

If you have the disk version of Planescape, then try installing ddrawfix.
If you have the GOG version, it now comes with ddrawfix installed by default. (but some win 8 users have had trouble with it) so if you have the GOG version, I would suggest you run setup-ddrawfix.exe & select uninstall & see how it goes.

The ddrawfix fixed my problem. Thanks olnorton!