Reduce memory usage during update
Instead of combining 2 cursors, this commit uses a first cursor, closes it, then uses another for one thread, then closes it.
Fixes #297 (closed)
Need to be retested.
Instead of combining 2 cursors, this commit uses a first cursor, closes it, then uses another for one thread, then closes it.
Fixes #297 (closed)
Need to be retested.