I am currently tackling a routing problem where I have to create daily schedule for workers to repair some installations. There 200,000 installations and a worker can only work 8 hours per fay. The goal is to make optimal routes on a daily basis; therefore optimizing the distance between the different points he has to visit on a daily basis but there is also a constraint on the priority of each installation. Indeed each installation has a priority between 0 and 1 and higher priority points should be given higher weights.
I am just looking for some suggestions as I have tried implementing some solutions (https://developers.google.com/optimization/routing/tsp) but due to the many points I have, this results in too long computation time.