Instability in system with low abstol and "Larger maxiters is needed" DifferentialEquations.jl; DynamicalSystems.jl

[Datseris]

@Sergey_Novak

RK4 with fixed time step 0.01 and with t 500000 have warning “Larger maxiters is needed”

The resolution of this warning is trivial: increase maxiters. So we can stop discussing about this case for now and focus on whether any substantial differences exist.