It will be definitely a good idea to reassign your PSA to your DESERVING downline in their own country, especially if you have a language barrier.
According to my experience, many PSA's from non-English speaking countries quit because they are not able to communicate with their sponsor when they need some help.
But make sure you re-assign your PSA's only to a deserving downline or as a part of some promotion. Don't give out free gifts.