Used to get occasional weird number runs; except it was not weird at all, since rolling a single die is an uncorrelated unique event, with exactly the same chance of each number on the die, every single time.
I don't think the periodicity in the RNG Larian use is as important as some would claim. It certainly would not cause such extremes as getting a "1" on ten consecutive rolls. A "true" RNG could cetainly do that ( as happens in real life TT ), but probably not an RNG that shows minor patterns.