Serious crashing Issue on Series S Please FIX!!

Please help. I recently upgraded to a Series S from my one X and every time I play halo wars 2 now it crashes around the 60 minute mark. I play skirmish offline against the A.I…I never had this issue on my One X but now every single game it crashes. I have tried turning off FPS boost, reinstalling the game but nothing works! Please fix this as the game is unplayable. I’m even considering going back to a one X as I love this game and now can’t play! Thought it would run better on series s but it’s worse! Is the same thing happening on the series x?