Stock plugs; Maximizer, Brickwallimiter; Raiser

I have tried them to tame transients and low levels on some instruments. I think they sound OK but I have some very strange effects when I use them together as inserts, the levels on instruments and vocals seems to go up and down somehow, its almost oscilating with slow frequency. I will not use them any time soon again that way. I know automation is better and I have done a lot of that but its time consuming… Do you have any experience with these? There is also a “Raiser” have not tried that.