Car won't run past 60mph

Many years ago, at the Low Country Mopar event, Summerville SC... They had a guest speaker who was a engineer/torque converter guru. This guy had cross sectionals or cut aways, separate internal parts, etc.., on his table, a board with a bunch of formulas written on it, and a speech that went on and on.
Most everything after, "how yall doing today?" went waaaaaay over my head. I stuck with it for about 15 minutes before Wife asked, "you getting any of this?" We might have stayed longer if there had been enough chairs. So we walked away having learned 1 thing... There are tremendous differences in torque converters from one application to another. Passenger cars, light duty 1 ton pickups, 2 ton pickups, larger dualies, school buses, you name it , all different in how they react to engine rpm ramps, rpm ranges, and loads.
Would that guru submit that your torque converter is only generating foam in the fluid beyond a certain rpm, due to lack of load ? Maybe. That is the type scenarios he was suggesting.