I'm not sure how to play it any more. I've made choices recently to go 46 when 45 would have aided me more with injuries. I know way back 45 would be ok and play straight. But that was a long time ago and JDB has changed the engine a lot. 45 is in red and I don't/didn't want to push it.
Basically, I try to give the engine no excuse to screw with my game plan. I haven't seen official word on 45 for a very long time....like v4.3 old, therefore, I'd avoid the red font at all costs.