Hah...I actually do this out of habit. Setting animation speed to 0 was an old optimization trick for Construct Classic.
He He He
Now I know I am not alone ;p
I do this out of habit as well... Same thing for any sprite that isn't using collision... I turn that off as well. I don't think it's weird to do so. Especially when something bugs out, you than know with certainty that it's not because of an animation speed setting. That said I have yet to have any issues with it
Actually I read somewhere that turning off collision doesn't optimize it at all, as a matter of fact you have to use Box2D instead of the asm [which is the better version] version to HAVE that ability.
Yes it shocks me that the ability to "turn off" collision is actually viewed as a feature in Construct 2 [because the web2D asm doesn't support it].
Please correctly me if I am wrong facecjf, Just trying to help ;p
I really love Construct 2 though, it is the Best 2D Game making program out there ;p