[xtinct]

Originally Posted by Wild_Bot -heapsize specifies size, in kilobytes, of internal HLDS heap that used for storing large pieces of data like hunks of BSP files, models and other things. HLDS allocates this heap from system memory. ......... It will be better to don't use these parameters unless you clearly understand what they mean.

Yup In case it cause nothing but increase in loading time or even a crash or Instability. Go Direct! DO NOT USE THEM