Is it possible to disable SQL Directive collection for few tables?

Is it possible to disable SQL directive collection for few tables?

We are on 12.1.0.2 PSU4, linux x86-64. We saw perf degradation after upgrade to 12c. One of the query, huge 500lines, involving complex views, saw change in plan, and even baselines are getting ignored, that we got from 11g db. Later, we compared stats from 11g db, and deleted extended stats, and it worked like charm. Hence, the question.

Thanks,
Yogi
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