Internet Direct (Indy) Version 9.0.2 Beta
TIdThreadMgr.ThreadPriority
Indicates the thread priority to use for new threads created by the thread manager.

property ThreadPriority: TIdThreadPriority;
Description
ThreadPriority is a TIdThreadPriority property that indicates the thread priority to be assigned to new thread instances created in CreateNewThread. The default value for ThreadPriority is tpNormal.