Irrlicht Engine

I have version 1.1 of Irrlicht.

Vb.net 2003 1.1 framework with dx9

I have had it for awhile now and just started using it again.

I converted the terrain sample, it works great but my cpu goes
to 100%, as soon as I end it I drop right back down to like 2% or
4%.

The terrain c++ sample runs at 100 ...