When I design in XD for an ios app at 1x (375pt × 812pt) and export it to 3x (1125px × 2436px ), I expect the exported image (PNG or JPEG) to have 2 times the resolution. Correct me if I am wrong! Whereas, this never happens. In fact, the 1x becomes 1/3rd in terms of quality (125px × 271px) as you can see in these 2 test images :
exported at 1x - 125x271 pxexported at 3x - 375x812 px
Point is that een after exporting at 3x I am getting the resolution same as what i imported as 1x , even worse than that.
Please suggest a fix in which i could get 3 times the resolution at 3x when i design at 1x.