It seems I'm not the only one thinking both GT3 mercedes handle the nurburgring's bumps way better than any other Gr3 car
The big problem is that it's is impossible to keep your SR fine when you end up in the pack. And in SR S or A DR B, there is not 15s between the leading group and the pack, more like 4-5s. If you're fighting in the leading group and you get pushed out of the track, the time you get back on tracks you are either just in front of the pack (which inevitably sees you as an easy oportunity to get one spot) or in it. And unless you are 5s faster than the pack, you will not manage to avoid the diving, and the unfair blocking that causes DR drop.
If like what you describe, I was just losing a bit of DR because i finish badly when I get push out of the track, I would not complain. But the way it is, if I can't qualify first, I can not keep my SR up.
Bumps from the back with a significantly higher speed in braking zone need to be 10s of immediate penalty or more. And PD need to get their **** together and come up with a decent penalty system than can't be exploited so easily.
In GT sport it goes like in real life : Take a group of 6 cars (A, B,C D, E, F)
Only B is dirty, so lap 1, turn 1, he pushes A and take the lead. A ends up in the middle and is pretty pissed. B is making dirty blocks on C, so A is catching up on C. C is getting annoyed of being blocked so he starts to defend more aggressively, A wants revenge on B so he needs to pass C fast, and does it a bit too aggressively. Now C is also pissed at A (...)
Reaching lap 5, everyone is pissed for a different reason, and everyone race more aggressively and dirtier than at the start.
The only way to prevent this is to penalize strongly dirty racers so that they don't contaminate everyone with their bad behavior, and that people feel like "OK I lost some positions, but at least this dirty racer is not a problem anymore, he did not gain advantage from pushing me, and he got penalized significantly more than me".