I drove pretty much by myself all the time except at the 4rd try in 1st race which got me next to last place as I explained above.
All my other problems were driver error crashing against some wall
I can tell from past experiences until now that I can drive pretty close to someone without hitting. The only time that collision detection failed on me was on Spa when I hit JogoAsobi and its explained in the Legends thread.
Now, I have IDs always on (when a bug does not disable them....). Latency range from 200 to 400ms everybody in green while in lobby indicator.
If someone tell me I hit them I will not doubt but rest assured, it'll not be on purpose as I several times go off track to avoid hitting someone.
As a last example, Steve128rs passed me right before the tunnel entrance from the left (I was aware of if because I saw him in the mirror) so I hold to my line and it was still very close and no incident.
I also remember legends series and the BMW. Side by side with fatkrakr and although I did not see him I knew from the start he was there so, just hold the line.
This leads me to agree with Vaxx and awareness plus assuming the guy in front migh change his line just because tire grip and not owns fault. The only direct blame I do is when I'm hit from behind IF I did not make an emergency brake (mostly because lag issues with cars "jumping" in front of me or crash in front of me)
BUT I always keep my distance and I usually wait for an error (or if after 2 laps the guy in front constantly has a window in the same spot

). As I said, I don't consider side by side scrubbing a deliberate collision while in passing manoeuvres.
All these talking to say I'm agreeing with Vaxxtx AND please tell me if I hit you even if I didn't know because it'll tell me so I can "learn" how much distance is needed to avoid a collision.
My 2¢ and forgive me if I messed up while (un)aware. I really don't want to loose this races we're having.