Stuck at startup

FS2020 had been running fine. The other night started (with Steam) went through developer screens then stopped on attached pi of buildings water and rainbow. Restarted, rebooted, sat for 30 mins and unresponsive to keyboard or mouse. Only way to exit was end task. Intel i7 3770, 32gb mem, GTX970
Thank you

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Zendesk ticket 97001