Any time the game freezes or crashes I would submit a ticket, include saved game files when available so hopefully they can reproduce and find and locate the error.
For support where examining saves is required, names of ships, planets and starbases, etc, are extremely helpful in their attempts to reproduce the issue.
Link to forums for explanation:
https://forums.galciv3.com/452855/page/1/
Link to support tool:
http://sd.stardock.com/Support/supportToolTest/SDSupportTool.exe
Oh! Here is the location for dmp files!
"C:\ProgramData\Stardock\Galactic Civilizations III"