The one MRO I have does seem to exhibit those issues if I don’t get my eye where it should be, like in certain asymmetric firing positions. It has not been as extreme as others have noted, however, and this is an early MRO.
Having said that, the Comp M5 is (to me) a superior optic in every way. Clarity, mounting options, battery type, you name it. Especially if you intend to ever use a magnifier.
I’ve got a Comp M5 on my go-to gun, a KAC CQB Mod2. The MRO is on a spare beater upper in the back of the safe, if that’s any indicator as to how I rank them.