Blurry AxisObject

I am trying to imitate default frame of ContourPlot with AxisObject. I used AbsoluteOptions of ContourPlot (opt) together with AxisStyle (st) but AxisObject still looks blurry compared to the default frame which is sharp and crystal clear.

Any suggestion what style or option is missing in my imitation?

st = AxisStyle -> Directive[Opacity[1], Black, AbsoluteThickness[0.5]]; ContourPlot[x == y, {x, -2, 2}, {y, -2, 2}, ContourStyle -> None] opt = DeleteCases[AbsoluteOptions[%], FrameTicks -> _] /. (Frame -> True) -> (Frame -> False); Graphics[{AxisObject[ Line[N@{{-(25/12), -(25/12)}, {25/12, -(25/12)}}], N@{-(25/12), 25/12}, st], AxisObject[Line[N@{{-(25/12), 25/12}, {25/12, 25/12}}], N@{-(25/12), 25/12}, TickDirection -> "Inward", TickLabels -> None, st], AxisObject[Line[N@{{-(25/12), -(25/12)}, {-(25/12), 25/12}}], N@{-(25/12), 25/12}, st], AxisObject[Line[N@{{25/12, -(25/12)}, {25/12, 25/12}}], N@{-(25/12), 25/12}, TickDirection -> "Inward", TickLabels -> None, st]}, opt] 

Or a simpler example:

AxisObject is blurry compared to the default frame or default axis.

Graphics[{AxisObject[Line[{{-2, -1}, {2, -1}}], {-2, 2}]}, Frame -> True] Graphics[{AxisObject[Line[{{-2, 1}, {2, 1}}], {-2, 2}]}, Axes -> {True, False}]