I have found that you often improve your time significantly by putttin your rider on slightly low effort on flat parts and downhill parts in order to preserve energy, and then raise the effort to very high levels up hills or in the final kilometres.

Let's say effort 60 is the pace that balances energy and distance left over the entire course, the "sweetspot". This will undoubtedly give you a good time, but I have found that if you set your GC rider on 58 for most of the course and build up energy reserve to ride on 70+ in the last 5 km or so or riding in high 60s up a final hill gives a relative advantage over just riding a steady pace all the way. The reason for this is that the relative speed difference between 58 and 60 is less substantial than the amount of energy you preserve and thus when you have the ability to significantly increase the effort in the end in total you're gaining a speed increase.

A great example of this is the mountain time trial in the Giro (original DB). When I ride that I am never close to have the best time at the first intermediate time, but at the top of the mountain I often take the first three positions even with riders that are way worse than most of the climbers because the difference caused by changing the effort on the flat is lower than on mountanous or hilly terrain.

This is simalar to mine but more in depth good tips thank you