Its a DTG print.. not a screen printAthletic whites are low bleed and recommended for polyester blends...Have you tried a high end white? Like Wilflex Bright Tiger white? Union or Mixopake. To me this looks like a very thin application of ink... or high mesh count. The thicker your lay-down =Flash= 2nd hit will assure you very little bleed. 110 with a solid white good lay-down I guarantee 100% better results and no dye migration.