Hi,
Try to run your load some other time and see the CPU utilization.
if its below 70% then your load will process in time.
if need you can increase packet sizes at dtp level which have default value 50,000 records.
increase parallel settings or your dtp. Even before running your load, cross check available application severs, based on that you can use increase or use available application servers.
T code - SM50 or SM51.
Thanks