Episode 2 lobby major bug

Hi

Everytime I reach the lobby, the whole game starts to glitch, for example:

- No music or game sound 

- Game starts to studder

- Unable to pass through the door into Leo's office 

- My whole computer starts to drastically slow down to point of freezing when I minimize it 

- When I do make it through the door, Khai and Leo Animation will freeze through out the entire cinematic, after the cinematic, I can't move or anything.

Is there anyway to bypass this mission or fix this cause I am unable to complete and continue on with the campaign.