On systems with a lot of processes, there are too many rows displayed at a time, so that the most important processes (those at the top) and the column headers no longer fit in one screenful. A few possible solutions:
Filter the displayed processes by some low-hanging fruit (e.g. zero or few samples, under 1% total cycles, etc.).
On systems with a lot of processes, there are too many rows displayed at a time, so that the most important processes (those at the top) and the column headers no longer fit in one screenful. A few possible solutions: