Is there a difference in physics when practicing in a Lobby versus the Free Practice?
I just did a 2:02.382 on my 4th lap, without breaking a sweat. In Free practice, I was in the high 4s and low 5s. The car felt more alive with fuel & tyre wear on.
I felt something similar to this. I didn't beat my qualy time in race, but I came a lot closer to it than I thought I could have. So far my best practice lap with no tire wear has been 1:59.5 in the SFR, but in race I was able to get down to 2:00.2 and that wasn't a very perfect lap. I think if I managed a better lap I could pull a 2:00.0 or even very high 1:59 with no mistakes. This was surprising to me, but I think it has something to do with comfort softs behaving differently than racing tires, which is what I'm used to. When I got the 2:00.2 in race, I think it was on my 5th or 6th lap, which was odd. It seems like comfort softs get better after a few laps, or maybe that was just me getting the hang of in-race tire wear, not sure. Then I joined someone else's practice lobby last night, and the best time I got was 2:00.9, something felt different. It felt like I couldn't brake as late or turn in as easily. Another guy in the race pulled off a 2:00 flat in the F50, but he's on the leaderboard and his practice time is in the 1:58's. What I recommend is running more laps with tire wear and fuel on, see how low you can get that time, then head back over to the practice session to see if you can mimic that lap and improve your time there. It worked for me and I shaved off a half-second doing so.
Some advice for this track using the SFR: you can probably carry more speed through those corners than you think you can. Braking hard initially, then letting up and turning pretty sharp will throw the car into a bit of a slide. In a race car, you don't really want this, but in the SFR it can gain you time if you get on the throttle mid slide and manage the steering through the exit. If you have TCS on, this won't work nearly as well. I just started braking later and inducing a little bit of a slide to get better turn-in, and gained a bunch of time.
Also, regarding the T2/T3 chicane...after initial braking, light throttle through the apex of T2 then get on full throttle up that hill as early as possible and find a way to stay full throttle all the way through to the braking zone of T5. It's not easy but you gain a lot of time there. As far as the bus-stop chicane goes toward the end of the lap...if you are lifting or braking, you are wrong. It can be done smoothly in the SFR with no lift whatsoever. There could be up to a whole second gained there if done right. Remember these are momentum cars, don't slow down unless you have to, find a way to chuck it through those corners at a higher speed. Even if it might look sloppy, it will be faster.