1.5.6 rockets causing massibe lag

I decided to report this as a bug, considering the irrationality of it.

With all settings maxed, on a empty scenario, me only present, I have butter smooth performance UNTIL I fire rockets. With each rocket fired the FPS noticeably drops, by the time I've launched a full volley, the game has dropped to a frame every few seconds until the rockets begin detonating. Once they're gone, performance returns to normal.

If I set the settings all to zero, or very low, it doesn't do it. This implies a glitch, leak, or severe optimisation issue. I have pulled the second GPU, shut down tertiary programs, etc, with no effect, so it's definitely 'gameside'.

I don't recall having this issue in the past, though I've mostly used 2.x until recently. I did not seem to have this problem at all in the 2.x codebase, though.

I'll continue testing and add any additional information I come up with.

Its the particle effects from the rocket smoke trails. Cluster munitions detonating on the ground can also cause it.

Methinks someone bumped something in the particle render code.