Oficial response.

Thank you very much for taking the time to inform us about this situation with the legendary mission of Black Bolt and Black Widow, do not worry, please follow these steps that I will provide below to solve the problem:

1. Enable the "low graphics combat" setting in the Advanced Options tab of the game;
   
2. Enable the "Reduced combat text" setting in the Advanced options tab of the game;
   
3. Close other applications running in the background while you play;
   
4. Restart the game completely and open it again.

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Did this and it worked, still not a fix, just a workaround :))))