Not to steal the thread, but are the strings between objects / edges normal? This is a constant issue with my Rostock Mini and I am not sure if I should speed it up, slow it down, are there minimum speeds needed for good prints, etc...
And at first when you mentioned waves in your prints, I was thinking something more along the horizontal axis rather than the vertical. The last time I tried to print anything, I was getting waves like the nozzle was digging into the print, forcing the plastic to wave out from the line being printed. This was resulting in my nozzle skipping on the next layer and ruining the print, hence the reason I tried to slow down my print speed.