In GT5 Prologue (if memory serves correct) player matching for online races was random, like QM in GT6. Back then we figured out that joining/entering races at a set time gave us a very good chance of getting matched up in a room together, and led to some of the most epic battles I have ever experienced in a GT game. I am very interested to know if this is possible with the current Quick Match races. If so we are missing a golden opportunity for clean and VERY profitable racing with like-minded folk. Anyone tried this? Want to? I'm up for it.
Regarding the current HSR event, agree about the Nardo, Miura, Shelby, etc. being very effective. I'm still tinkering with the FX45 Concept, I'm typically about 2-3 seconds behind those cars by the finish. Lack of top speed is killing me. I've yet to be beaten off the line though.
Racing at Tsukuba is more challenging. I haven't mastered carrying speed in the RX-7. The Tesla is fast-once it gets moving. You will be last by the first turn, regardless of where you start. It carries a lot of speed through the turns and has good top speed, so making your way through traffic toward the front of the field is possible with a little luck and good timing. When you manage a win...it's certainly been earned.