css - Transitions run slower on first use in IE -

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i have element has transition: .25s linear;.

it runs slower on first use whenever page loaded in ie11, , thereafter works expected. why this? there caching of animation? works expected in chrome.

this sounds nitpicky, it's noticeable , annoying glitch elements position effected it, , on slower load, can see background element shouldn't able to.

i suspect runs first time due initial page load. there may other processes running may slow transition down too. second time smoother because resources have been cached , performance isn't hampered. run site through https://developers.google.com/speed/pagespeed/?hl=en find render-blocking scripts may hampering performance.

also see article identify properties can animated cheaply. http://www.html5rocks.com/en/tutorials/speed/high-performance-animations/


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