Hello,
this process is main part of SAS Information Retrieval Studio and the SAS Search Interface.
SAS Information Retrieval Studio is a framework and graphical administration interface for crawling, normalizing, analyzing, indexing, and searching text documents. It serves as the default user interface to SAS Web Crawler and SAS Search and Indexing, and provides integration with other products including SAS Content Categorization and SAS Sentiment Analysis.
The process taking high CPU is "normal", because tix.exe historically tends to take as much free cpu resources as possible (it should not block the other process, just taking more or less cpu, as required).
Anyway, before the application of that hotfix, I would recommend you to check the status of the SAS IRS, because to me it seems that IRS is requiring or trying to rebuild constantly your indexes, therefore some services might not be working properly:
http://support.sas.com/kb/59/133.html
http://support.sas.com/kb/55/697.html