goko Posted December 31, 2009 Share Posted December 31, 2009 I am having some Mouse Lag when I have both iTunes and QuickTime Player open. Mouse Lag is smaller by some degree if I close either one or the other. When both closed I have no Lag at all. My motherboard is Asus P5W with NVidia 8800 GT flashed and recognized as quadro. SL is installed using this guide: http://www.insanelymac.com/forum/index.php...t&p=1360946 right after, I installed 10.6.2 Combo Update, ran Conti's pfix script and re-ran 314TeR's Install Script over again. I then continued to install all available updates via Software Update. I do not know if this is related but there is an AppleUpStreamUserClient.kext file in /System/Library/Extensions/ and I do not know whether it is blocked or not. Link to comment https://www.insanelymac.com/forum/topic/205063-1062-itunes-902-quicktime-100-9031-mouse-lag/ Share on other sites More sharing options...
Allan C Posted December 31, 2009 Share Posted December 31, 2009 Yes, just delete the kext and clean up kext cache files. That's OK. Link to comment https://www.insanelymac.com/forum/topic/205063-1062-itunes-902-quicktime-100-9031-mouse-lag/#findComment-1373262 Share on other sites More sharing options...
goko Posted January 1, 2010 Author Share Posted January 1, 2010 Thanks, that seems to fix it Link to comment https://www.insanelymac.com/forum/topic/205063-1062-itunes-902-quicktime-100-9031-mouse-lag/#findComment-1373949 Share on other sites More sharing options...
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