Text render quality changes between renders

[Art V]

The 2D text quality changes between renders, even though the render settings are the same.

1st time the quality was a very low (just a blur), so I used very high quality in the custom render settings and got good results in the 2nd render. The 3rd time, after rendering with the same custom render settings, the text quality was was back to the same as in the 1st render (i.e. a blur).

I'd rather avoid overlaying viewports or extruding texts to solve this issue, does anyone have an idea what may be causing this inconsistency in render results for 2d text? And how to solve it?

[EAlexander]

Art - are these renders happening on different sheet layers?

If so, do you have different DPI settings for each sheet layer?

[Art V]

No, it is just one and the same sheet later, same DPI setting (300 DPI), same render settings etc. for the 2nd and 3rd render so you would except the result to be repeatable, i.e. the 3rd render to look the same as the 2nd. But it didn't.