But you noticed it in the first place because of MISSES. That is exactly my point - I do not see how someone can say "I'm ok with misses", and then complain about "manipulated RNG".

Also, what you are describing is almost certainly not problem with "computer RNG " as you implied in your previous post ( when you said they need to "invest in a new RNG") . No RNG generator is so bad as to 'frequently' generate string of unlikely events, and then averages out to correct averages over time. Computer RNG generators usually have 128 bit cycle, but even with only 32 bit cycle numbers would start to repeat after 4 billion generations.

If those cases with frequent misses on low hp and boss creatures really happen ( and I do not doubt your findings ), then it is NOT because of 'bad RNG' but because Larian decided to make it so. For example, with hidden -5 attack roll modifier if mob on low hp or is boss. But in that case, that is NOT bad RNG, it is bad game decision.