an important fixup version is available at https://sourceforge.net/projects/assp/files/ASSP%20V2%20multithreading/2.6.1%20latest%20fixup/
There was a BUG in the code, which may caused very high CPU usage because of an unhandled exception.
It is highly recommended to upgrade to this fixup version. All version since 2.3.4 13156 are affected by this BUG.
Thomas