vrumor :
Did you check on the Steam forums for similiar issues? May be a W10 thing.
I have. As much as i've spent time trying to fix this (give or take a few hours.), i have not found this issue to be a reoccurring one. If it means anything this is the event log for when it crashes.
Faulting application name: CivilizationV.exe, version: 1.0.3.279, time stamp: 0x546ccb59
Faulting module name: ntdll.dll, version: 10.0.10041.0, time stamp: 0x5503aabe
Exception code: 0xc0000409
Fault offset: 0x0005bcda
Faulting process id: 0x1844
Faulting application start time: 0x01d06c00a018f20c
Faulting application path: C:\Program Files (x86)\Steam\steamapps\common\Sid Meier's Civilization V\CivilizationV.exe
Faulting module path: C:\WINDOWS\SYSTEM32\ntdll.dll
Report Id: df4da8bf-d7f3-11e4-b630-6c71d914a444
Faulting package full name:
Faulting package-relative application ID: