The strange thing is a few months ago I spent a few days making TST scale properly to higher DPIs and testing it, it works well for me on Windows 7 at least, maybe you could email me some screenshots or add me on AIM/MSN/ICQ/Skype and show me the problem on teamviewer?
AIM: ZandryTST
MSN:
[email protected]
ICQ: 571846001
Skype: ZandryTST