Hi and thankyou for the expert opinion, and playing of my game. I've changed the game within 5 minutes of reading this to implement antialiasing, and wow it made so much difference. I can't thank you enough. I've tried FXAA so far, and will experiment with temporalAA and MSAA to see which is better. Never even played with AA before now lol.
The pieces which don't move are relics of attempting randomisation of placement of the pieces, which I ran of of time to finish, and also to clean up lol. Also my 2d radar kind of sucks, it so short distance and forward detection , and at the speed the ship is travelling it is of no use. I'm in the midst of implementing a 3d version, and whole of map detection, but now concerned finding pieces will be too easy. I'll try balance that with more enemies.
Regards.