This one hit me today as well.

Having both those issues. With survey ships and pirates and one particular anomaly that pops up a message box saying I need a survey module so I get a stack of survey ships parked on it.

This has happened to me as well. What I have noticed is that it happens when two survey ships arrive at the anomaly at the same time. It locks and cannot process. 

I have had success in reloading from autosve and finding the ships and directing all but one away from the anomaly. 

Also note this happens prime when the ships are set to auto survey. Two surveyors which are near sch other tend to follow the exact same route. 

Apologies for typos, sent from my phone. 

Same here!

When survey ships comes across pirate ships- the performance on auto resolve4 combat is veryyyy slow- all game hangs for a bit. If you select manual resolve- there is a slight hick-up before the animation kicks in.

The sad part in all of this (I did play on insane map), is that at some random point it just wont let you move on(overflow?...), the end basically. Also turn gryed out and save/load locked out. Hit exit- reload and hit exit- repeat.

As mentioned above survey ships dont seem to be smart- they stack up sometimes, they sometimes all go for the same anomaly and their priorities are odd.