I got problems in Jeffersson memorial room. First of all the cenral unable shoot the Assistant scientist. Cenral is just shooting like hell and finally after few minutes he hits the target. So, now the plot can gontinue but when I'm leaving from Jefferson's memorial room, game goes frozen when loading. I was able to go trough these difficulties before and I got away from the Enclaves using escape tunnel... But when I finally got in the surface Brotherhood Of Steel fellows who were suppose to help me killed me and my escaoing companions. Thats just the forst of it.