I found that problem occurs only for dim=0.
At least dim=1 and dim=2 looks way better.
Strange, because header file says:
* @param Dim - The Sobol dimension to use (0-15).
Looks like not true, and correct range is rather 1-15.
Also is should be pointed that “seed” is not what we used to.
Values from strem seeded by value 1234 and 4567 would be very similar (within 1% difference).
When someone want something different, then 24 bit seed need to be very different.
So do not seed it with rand(), because RAND_MAX is often 32768 and different streams are seeded very closely.