Thanks for the background
but;
In short, Ctrl-S has always been and should continue to be a "hidden" feature needed only if there is instability in the fish animation.
This somehow implies that it will run at the reduced CPU rate automatically. This has not been my case and I find an inconsistancy in the CPU used. From a low of 10~15% to a normal of ~40%. Perhaps the installation of V2 was influenced by copies of previous versions. However I installed V2 at work, (just to see what it looks like on a 19" LCD) a new installation and it runs at 100%...... And overheats the card to produce stuttering fish and bubbles in approximatly 10 minutes of running
(a 32Meg GeForce something in a P-4 specifically purchased to run Autocad).
I will try the Ctrl-S routine on Monday to see if I can reduce the CPU demand..... or remove it