Visa free countries are:
The country where you fled persecution
Country of Origin
Recognized refugees, can apply for and use the refugee passport from the Department of Home Affairs for travel abroad. This South African-issued refugee passport is valid for travel abroad, including to the country of origin.
Canada: Immigration and Refugee Board of Canada, South Africa: Whether the travel document issued to refugees is valid for travel to the country from which the person fled persecution, including the Democratic Republic of the Congo
(Refworld)
Furthermore, it goes on to state that returning to your country of origin on this travel document could result in its revocation:
returning to their country of origin indicates… that the refugee no longer fears persecution… it is likely that [they] will lose refugee status. If the refugee status is revoked, the refugee passport is also revoked
Credit:stackoverflow.com‘