Here are a few things.
1. Make sure you have the latest drivers.
2. Turn down the graphics acceleration, you can experiment with this setting to see which one works.
3. Lower your refresh rate.
See this thread for reference, it also refrences another thread from within that one that may be helpful as well.
http://www.europa-universalis.com/forum/showthread.php?threadid=65168
Good luck let me know what worked.
1. Make sure you have the latest drivers.
2. Turn down the graphics acceleration, you can experiment with this setting to see which one works.
3. Lower your refresh rate.
See this thread for reference, it also refrences another thread from within that one that may be helpful as well.
http://www.europa-universalis.com/forum/showthread.php?threadid=65168
Good luck let me know what worked.