With this mod you can't save without the save fix. Just tried.
I take it this is a work in progress mod, so here is some short feedback from the test ride I had. Just in case that is some useful info for you.
0) AI don't do rocket starts anymore, some drivers even blow the start. Looks quite realistic to me, thumbs up.
1) 40% race in Suzuka, pro difficulty, fuel sim + tyre sim on, I struggle keeping up with the backmarkers.
2) Same as in 1), but fuel sim off, I can go the pace of the race leader quite comfortably.
3) Same as in 1), but Istanbul this time, I'm way faster than the race leader and win by 35 seconds in front of Massa. Maybe noteworthy: last 14 places finished within 10 seconds. Schumacher was the guy who finished in 10th, so it was not due to a backmarker blocking the road for the faster guys. Kinda looks like the Virgins, HRT and Lotus can go about the same speed as the Mercs. At least they did in that race.