I really would like to know how SR is being calculated (less laps means higher risk of losing SR without the possibility of restoring it?) And howmany SR do you gain/lose in a certain situation.
Back to your clip. This is indeed frustrating when you think you will have a clean pass without doing anything wrong and it still get's messed up. This even makes me doubt sometimes if I would pass the person in front of me or not. Pure because of the situation you just showed.
Fuji was a mess, first lap was pure comedy. I let the two cars behind me go ahead to watch the spectacle safely from behind. Imo half the field deserved penalties in lap 1 yet only a few unlucky ones got singled out, nothing but contact. Later on I saw a laggy car murder another car, no penalty. Driving with lag still gives you the advantage. Anyway, I kept my distance, plenty asphalt on Fuji to avoid everyone, thus only finished 14th in the end with a best lap of a slow1:33.9 and back to 99 SR.
SR is calculated based on how many green SR up arrows you collect. You get one for each sector you stay on the track and do not get any SR Downs. You will still get the green up arrow if you get bumped off and the penalty system rules it was not your fault.
Depending on the race and car combo the total number of sectors varies. The more total sectors, the higher the total SR you can get. The actual amount per sector seems to vary a bit, it's usually very close to 0.4 per sector. The last sector never gives you SR up so that doesn't count.
For example, last weeks Tokyo 2 laps had a max of 2 SR for a total of 6 (2x3) sectors, 2/5 = 0.4 SR per sector. One SR Down meant -1 SR for the race.
Suzuka GR.2 had a max of 21 SR for a total of 50 (10x5) sectors, 21/49 = 0.43 SR per sector.
Tokyo that week had a max of 10 SR for a total of 24 (6x4) sectors, 10/23 = 0.43 SR per sector.
N24 had a maximum of 12 SR for a total of 32 (2x16) sectors, 12/31 = 0.39 SR per sector.
If your SR goes below 50, the maximum SR you can get per race increases. It goes up to 2.4x the normal down in SR.E. There a clean race on Suzuka GR.2 would have been worth 50 SR points.
An SR Down for contact (without a penalty) is I think -3 SR. Sometimes you still lose SR for contact without seeing SR Down which is how you can end up with a red rating with clean race bonus. The SR loss for time penalties is much higher, something like twice the amount of the penalty. That also means that the higher your DR, the higher you get hit with SR loss since the time penalties are higher.
I don't understand why DR discrepancies are there. Shouldn't everyone have the same treatment no matter what DR you're? A DR D isn't going to learn anything by hitting a DR A or B off the track and getting away with it. I think it's going to encourage them to do it more often. It's like you're being placed at a disadvantage by ranking up which shouldn't be the case. Maybe I'm missing something but I don't see it.
Perhaps it's cultural differences, master vs the student. Higher ranked players are supposed to be faster and have better race craft, so it's on them to give the learning players room. However it has the opposite effect as it doesn't teach good race craft at all.
Likely it's just a by product of making the rules more strict the higher ranked you get. A lot of leniency at low DR to learn the ropes without getting discouraged with penalty after penalty, then increased expectations on your clean driving skills as you rank up. The problem is, DR resets for driving dirty only gives dirty drivers more leniency to keep driving dirty. Plus there aren't enough players to fill rooms with the same DR so the rule sets often clash.