After the mission "Cleansing the Commonwealth" , I can′t go into the Cambridge Police Station anymore. Everytime I try to enter the building, I just fall through the floor with horrible lags.

Did anyone else experience this ? Is there a way to solve this already ?

I tried both doors on the ground floor. Im playing on the PS4 and my version is 1.01.

Help is greatly appreciated.

Have you tried reverting back to an earlier save?

Also, if you go into the settings menu, do you see that the update is 1.1.21?

I tried all of my earlier saves, but it wont help. The update is 1.1.21.0.0.

If it helps :

Thats a video of it

/watch?v=tghdYWx7EBI

Happens to me too, but I'm on the Xbox one.

Was happening to me but was able to get in after doing a bunch of other other unrelated sidequests.