Could we get some braking point markers before the downhill righthand kink? Maybe on the wall or something like that.. Seem to miss the apex often there.
If i'm thinking of the right spot that you are, then I use the white line across the road as my braking point. If your driving mainly offline, try setting up a few cones using the layout options, then learn the braking points relative to the curb on the left.
There are always something around the track that can be used as a marker whether it is a shadow (since we don't have dynamic time), the start of curbs, trees, grass, tires, or numbered markers, etc. You just have to look around for something.