You know I had this problem when it came to python dungeon... I couldn't figure out why some other people can complete the run without DCing. Then I decided to stop using gameguard bypass and I haven't DCed since! WOOT WOOT LOL...
In the end... It really depends on your CPU, Video Card, Internet Connection & How many changes you make to your data.pak file.
If you have a good CPU, Video Card & Internet Connection, I would recommend that you totally delete the game off your computer and reinstall. Just change the AIs in monster editor and test it to see if you still continue to DC...
Good Luck!