Update: May 5, 4:45 p.m. ET: Players are reporting corrupted save files following the release of today’s patch. Some players are seeing error code “CE-100028-1” every couple minutes, which appears to indicate a corrupt save file. You may want to disable game updates (or keep them disabled) until the situation with…
Source: Kotaku – Returnal Patch Aims To Reduce Crashes, Increase…Corpses? [UPDATE: Save Corruptions Reported]