This reflects your acquisition. Since T2 scans require a long TE and TR, it was common for them to be acquired with high resolution in plane, but very thick slices. This reduced the number of slices required and therefore kept the acquisition time reasonable. In brief, your images are anisotropic. If you are acquiring new images, you may want to explore modern sequences like SPACE, which provide high-resolution isotropic scans in a reasonable time by exploiting variable flip angles.

If you go to the MRIcron "Preferences" panel, the top two check boxes influence how anisotropic data is loaded: it can either be resliced which provides nicely scaled images but can look very blurry, it can be rotated to the nearest orthogonal, or if neither button is checked the image is displayed as saved on disk.

You may also want to try out MRIcroGL
  https://github.com/neurolabusc/MRIcroGL/releases
which scales the images in plane. 

Again, this reflects an attribute of your source data, and if the between-slice resolution is too coarse, there may be no suitable way to visualize these images across slices.