Last night I was “just riding along”. Adter about 30 minutes the screen froze for about 10-20 seconds, and when it re started all the other riders (including AIs) dissapeared. After that I was riding alone for the next half hour - fine riding (though a bit boring). Then the screen froze again, this time for about 2 minutes - when things started moving again a bunch of other riders gradually appeared again.
This happened about 20:30 GMT and lasted for about 30 minutes.
It happened to me as well, at the same time 20.30 uk time. On the positive side i won both sprint jerseys and i was KOM 