How many Open Actions do you have in your console? How many computers are returned by the filter?
According to @jgstew in a previous post Relevance search for computer with thousands of possibilities, the use of bes computers leads to every computer being evaluated. (I see that you’ve run into this problem before… 
) Do you have computer groups that might provide some scoping?
Have you tried evaluating against just a single computer ID? If that works you might be able to put some limits on the range of the computer ID.
Another thought is to limit the sites that the action(s) are derived from.
I don’t think the last part of your filter will do any good, since the data has to be returned and evaluated to determine if there are more than 1000 reported actions.