Texture compression issue

Hi everyone,

I am having an issue with the textures´ compression in ue4. I had some 360 captures that look pretty well, but when I import them to ue4 and DXT1 texture compression is selected the quality drops hugely, over all in shadows parts. If I import them on .hdr format and the Texture compression is noHDR the quality is amazing but size increases like 20 times.

Could anyone give some tips about how to keep the quality without increase their size??

Regards,