I want to select the features at a particular point.
To me the real question is: Why do you need to select the objects on this particular point.
To my experience the ssget with a point argument only works ok with
zoom c and something like 200, depending how tense the drawing is. I always try to add a filter argument to make sure the entity I want is selected.
Cant you filter with the block name to get your ss and than calculate from the cdr 10 value for each object?
I guess if you tell us more what you want to do with the objects it will be easier to give useful advice.