I'm guessing here, but it could be that the lack of a shoulder (seemingly endless straight-line section of curve) on these films lets the highlight contrast "go to far" (a common problem with these films). Older technology films, like Plus-X, have a limit (shoulder) that may preclude this problem.(posted 8404 days ago)I'm not a fan of the new films, and prefer to work with the older ones. Maybe somebody with more TMax experience can offer a suggestion.
TMax 100 & 400 have slightly reduced blue sensitivity (compared with traditional films) which might play a role here, depending upon the color content of your light.