The 1720px wide image may be the issue. You may be able to eliminate the stuttering if you split that image in half [quote=“saico, post:1, topic:7120”]
“The Neon Deamon” shakes while getting bigger.
You may have better performance using a ‘Scale’ animation – this animates only two properties, while your animation may be animating four separate properties:
test1.zip (124.7 KB)
You can set scale while recording by holding ⌘ while you resize.