I've noticed that (especially in the dark) the edges of the cab, objects and scenery flicker between being blurred and sharp. I think this may be due to the motion blur that is in the game, not to mention the lag caused by said motion blur. My advice, add an option to disable motion blur, depth of field and other visual features that aren't very necessary since the performance on some routes is very poor on the base PS4.
There are many benefits from using a usb keyboard with TSW, quicker access to functions and accessing extra options etc. One of those extras is that pressing ctrl F2 will disable the motion blur.