davke Posted July 20, 2018 Share Posted July 20, 2018 Heyhave just installed High Sierra 10.13.5 on my dell optiplex 990 problem : keeps hanging (lag) for 1sec in safari or between programs also when playing video on youtube little bit of glitch + hang for 1 sec. or 2 sec System: Dell optiplex 990 - Core I7 Vpro 2600 3.4 GHz 8GB RAM graphics card : ASUS Radeon XR 560 AMD 2GB HDD : 3.5 SATA Grtz, davke Link to comment https://www.insanelymac.com/forum/topic/334934-dell-optiplex-990-lag/ Share on other sites More sharing options...
davke Posted July 23, 2018 Author Share Posted July 23, 2018 Someone an idea what the problem can be? Link to comment https://www.insanelymac.com/forum/topic/334934-dell-optiplex-990-lag/#findComment-2627145 Share on other sites More sharing options...
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