Ok so I think I found a solution. As mentioned above, I run Windows 7 and use Asus 27" monitor with the resolution of 2560x1440. The problem for me seems to have been the Aero theme for Windows - with basic theme, everything works fine. So if you have similar issues you can either change your Windows theme to basic, or you can disable desktop composition in the compatibility settings menu of your iPoker client and when you run the client, Windows will automatically change the colour scheme to basic.
Don't disable desktop composition. Some things need it. Change the theme.
Regards udbrky (Chris)
I have a similar issue, the tables won't resize. They get smaller but the graphics etc stay the same size.
I have a 4k monitor that worked before but I recently had to reinstall everything and now it doesn't work.
Any advice?