I have noticed the exact same thing, dan1ellz. I have a self-written webpage on my localhost where the content scrolls in to the screen from the far left to the middle, like some tablet apps do. However on this computer, the delay is around 30s. It takes exactly 30 seconds before this css keyframe animation is even started!
I've tried everything. Nothing I did could make Opera 27 behave properly. Sometimes on a fresh install it would behave for like 2 or 3 times, but then it would revert to the same delay as before. The only thing that worked for me was to install the older version of Opera, 26, and after that I had to BREAK the auto-updater by renaming it. So that I will stay on v26 until this problem is sorted out. I can recommend that you try this. Because this problem does not exist for me in v26. Opera Devs, if you are reading, that is why updates should always be initiated by the USER and never ever ever be fully automated! If you need some info about my system config, feel free to contact me.
The updater is found at
C:\Program Files (x86)\Opera\current version number\opera_autoupdate.exe