Safari 8.0.4 running 10.10.2 on Macbook Pro early 2013 2.4GHz I7 8GB ram w/ NVIDIA GeForce GT 650M 1024MB. Have the same problem with Graphics. Screen has been replaced. Logic Board has been replaced. Graphics work better after resets, reloading software, fixing permissions and the usual. In my house I have four Macs all running 10.10.2 and Safari 8.0.4. iMac #1 mid 2011 27" 3.4GHz I7 32GB Ram w/ AMD Radeon HD 6970M 1024MB, iMac #2 (oldest) 2.8GHz I7 16GB Ram w/ ATI Radeon HD 4850 512MB, Macbook Pro Mid 2012 2.3GHz I7 16GB Ram W/ NVIDIA GeForce GT 650M 512 MB, and as stated earlier a Macbook Pro early 2013 2.4GHz I7 8GB ram w/ NVIDIA GeForce GT 650M 1024MB.
Bottom line inferior older iMacs work fine without any Graphics issues. The 2012 Macbook Pro has issues but nothing that won't either resolve itself or scrolling up and down won't fix. The 2013 Retina on the other hand doesn't work right, period. So far the screen was replaced and it worked better but progressively got worse. Then the Logic Board was replaced and same thing, it progressively got worse. That's going to solve all the problems...... right.......... Wrong. I have Applecare on the three newest Macs which at the juncture seems to be irrelevant since the newest with Retina doesn't work even after 10 hours on the phone with senior Applecare techs and sending the Macbook off for repairs twice. It has passed every hardware test ever done even before parts were swapped. Only one explanation as far as I can tell. After all this you would have to think that certain computer hardware produced by Apple is not compatible with the newest software (Safari 8 and/or 10.10 OS). I like many others that I read are ready to throw the Mac out the window, run over it with a couple cars, and maybe set it on fire. So I would appreciate tremendously if anyone has any ideas on what someone that is very tech savvy might do about this other than seeing a Shrink. BTW the work around is to use Firefox which doesn't sync with my other Macs, iPhones, or iPads. I didn't spend all that money to not get the proper experience.