to those who have used/owned a millet dms-1
at illumination settings, 9 to 11, this is how the reticle looks. its like the illumination from the center dot vaguely spreads across the lens.

but when i take it outdoors at the same settings, it clear like this:

is there something wrong with the scope, or the i’m just not supposed to use high illumination settings when indoors or at dark places?
TIA