Just fast and not fast, 2 groups. First two sessions I went out mid group in the fast and had a terrible time being stuck behind people with other fast guys slicing through at any opportunity, like in the video. Third session I went out at the front along with Ricks1 and had the proper fast lads pass me after a lap or two (there were around 6-7 riders doing the low 1.40s I saw) and then didn't have anyone come past me for the rest of the session, lots of clear laps. After lunch FE moved a few people up and down based on the transponders and I kept going out at the front and the pace was good.
The problem I often find is that if I am stuck behind a bike with the same acceleration / performance, as was the case on Tuesday, the main opportunities to get past are either on the brakes or carrying more speed out of the corners. What I found with a few bikes was that I caught them easily but as soon as I showed them my front wheel they started braking later into corners which resulted in taking weird lines through which felt like it was going to end in tears, so I'd back off. A few riders simply barged their way through the traffic but I didn't because I was playing nice. lol.