There can be a few reasons why you experience frequent disconnects. You can try that methods to fix the problem.
1. Check your internet connection using internet speedtests and make sure that you do not have too big ping.
2. Try to add DBOGLauncher.exe and Client.exe to your firewall exceptions.
3. Try to add DBOGLauncher.exe and Client.exe to your antivirus exceptions.
4. Eventually add port 20200 to firewall exceptions ( If I am right that is the port which DBOG is using).
If it won't solve your problems try to open command prompt as Administrator and type ping 78.46.46.169
Then show your results in this thread.
Edit: You can try to select Client.exe priority to High in task manager.