only single hound/croc per wave

Every time you world hop or go into a loading screen, this will happen. This will happen in shipwrecked and ROG, but not hamlet. So this means that if you go from hamlet to shipwrecked or shipwrecked to ROG, you will have this happen. This also happens if you go out of caves. This will not affect actual hound waves though, those will still come at the regular times.

 

But yeah, happens to me everytime.

This is also happening to me.