Never had a complete TOAW IV crash, but have had the game lock up (become non-responsive). Always seems to happen when I move units by air, sea or train over long distances. Also appears to be connected to the lower screen zoom levels. Dell, W10.
These steps may help, they did for me before I switched to a dedicated Win7 machine:
SITREP LOG OFF
Killing the mini-map / air briefing window / info line also may help before doing those big moves under Win10
The game works great on my Win7 machine. No issues there, I have sound ON, TOAWLOG ON, SitRep ON in Win7 but sometimes it still burps (says [not responding sometimes, but recovers quickly])
I hope this information is helpful. Seems to be some kind of memory leak under Win10, not sure.