First,how many miles on the transmission?
Does the transmission fluid have any metal color about it,or does it smell burnt ?
Might be that the clutch material is starting to wear down and not fully locking up.
If it does have metal color or a burnt smell to the fluid there's not much that's a " quick fix " at all.But you could change the filter and fluid add Lucuas Oil transmission additive.Or just add it without changing filter and fluid.
Or if you don't want to get that involved,and if the transmission is about a quart low on fluid,add a can Trans-X to the transmission.
But if it's not the fluids or filter or anything else mentioned don't seem to help,it's time for that overhaul 🙁