It's just the way the cars perform against how they perform when sharing the track. In the Grand Am series you have the DP sharing the track with the Mustang, the DP simply outclasses the Mustang in everything, passing a Mustang is not a big deal on the DP. Now with the HPD you need to time your attempts in order to make them work, cornering speed in this car is just insanely fast and that's where all its speed comes from, starightline speed for this car is just slow wich makes passing even more critical!
Like I've said many times, the HPD is such an easy car to drive and that in itself can be deceiving. You can run 10 practice laps and be on pace and thinking you're ready to race, when in reality you're far from it, way too far from it. By the way the driver reacted on the first incident telling me I need to practice because I braked for T1 says a lot of how far from ready that guy is for that car!
In order to properly drive that car you need a very high sense of situational awareness wich only comes with knowing the other cars, something this guy clearly has no idea about! The second incident is only proves the point further, this guy get's into trouble in practice for the same thing with the same driver and is still clueless about the fact that GT cars need the whole track when cornering and their capabilities at such are way lower than an LMP car.
In my opinion everything needs to be revised and changed in order for this particular series to work.
-LMP drivers need a higher standard to drive the car, for example a full season of GT racing under their belt before beign elegible to race the car.
-LMP drivers need a higher penalty for their actions, twice the current ammount and no 0x for them.
-Protests need to be handled differently for this series.
Basically it all comes down to making people think twice before racing this car instead of just jumping in it because it is so easy to drive and you can get away with almost anything in it.