On your end it does seem to be either shader or draw distance related, or just the apparently known transversal stutter when UE4 loads the next section of the track...
Seems that maybe disabling Hyperthreading or setting the affinity for fewer or specific cores of your CPU could help, but I dont know... Good luck with that! (Realistically UE4 can't really fully utilize more than 4 cores...)
They either don't want to fix these issues or can't. They could at least be clear about it... Mine is just the vsync for f sakes.
I disabled my E cores, because it's better for gaming. But only this game struggling with this issue, so I don't think it's a PC issue.
If the ACC work fine with the same engine, then it's a optimization problem of EA.
