Timout occurs while executing Zreports

Hi Gurus,

Many of Zreports inmy company terminates withous executing and throws ABAP Dump. I increased value of parameter

rdisp/max_wprun_time to 1000 but still problem pursue as it was before. Please help me in finding the solution for it. Also what will be its effect on system if parameter value is increased to something around 1500.

Please give me permanant solution upon it.