You have modified a package to meet the requirements of your computer while it clearly states that 2 GB of RAM are needed to run fluently on computers. I recommend downloading an older version of the software then use Orca to modify it. It's possible the package wasn't compiled correctly after alteration.
Additionally, install latest Net Framework and Visual Runtime libraries. You can find them through the database of Software Informer.
A list with older versions of the software can be found on the XDA Wiki. Access Google Search then browse to the website.