I'm not sure I exactly remember what is happening with this scenario, but I would think you can try adding static class helpers for some functionality. Other than that, I would need a bit more context of what the code you posted is doing.
And are you doing a large number of dynamic object creation or are the objects manipulating alot of different test resources(ie browsers, Desktop, etc.)?
If your doing explicit object creation like in the code posted below, I would not think that this would be too resource intensive and degrade performance.
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