4 ms·

I don't know exactly what conditions are required to reproduce the bug, but it clearly does not apply to all rMBPs. I'm on a 15-inch 2016 rMBP and have been usi

I don't know exactly what conditions are required to reproduce the bug, but it clearly does not apply to all rMBPs. I'm on a 15-inch 2016 rMBP and have been using Firefox on it successfully since I got it. Before that I spent a couple months on a 2013 rMBP, also no problems. Edit: For people who want to compare notes: High Sierra 10.13.6, Firefox 62.0.2, resolution is set to "Default for display" (which I think does mean it's doing interpolation of some sort). Automatic graphics switching is enabled. I don't have any trouble watching YouTube videos.

ericabiz 8y ago
It happens when you set your rMBP display to "Scaled" in display preferences, which is what most developers do. (Edit to your edit: Try the "More Space" option in your display preferences! It's amazing.)
- thom_nic 8y ago
  I tried this as well, can't reproduce. I've got a 15" "late 2013" rMBP, set display options to "more space." I've got a total of 45 tabs open between a couple different windows (I use the userChrome hack to re-enable multiple tab rows.) Cycled between tabs, refreshed, navigated around FB, GMail, etc. Can't get the CPU to do anything out of the ordinary.
- eslaught 8y ago
  Similar to the sibling comment, I can't seem to repro. I switched "More Space", restarted Firefox, loaded up a dozen or so tabs. I even watched a YouTube video for about 10 minutes. The video did cause CPU to jump a bit, but it dropped when I unloaded the tab, and nothing I've done (including the video) has caused any sort of lag like described in your first post or subsequent follow-up. I'm not sure what to say. I'm sure the issue is real, but it seems like we're missing something in the triage. There has to be something else that makes a difference.
- mercutio2 8y ago
  I very much doubt that “most” developers use “More space”. Most developers in their early 20s seems plausible, but even there, I surveyed my team’s younger cohort, and it was less than 50%.
blt 8y ago
I have my display set to "scaled". I get the worst slowdown when streaming videos. 2013 15" w/ Nvidia gpu.

ericabiz 8y ago

It happens when you set your rMBP display to "Scaled" in display preferences, which is what most developers do. (Edit to your edit: Try the "More Space" option in your display preferences! It's amazing.)

thom_nic 8y ago
I tried this as well, can't reproduce. I've got a 15" "late 2013" rMBP, set display options to "more space." I've got a total of 45 tabs open between a couple different windows (I use the userChrome hack to re-enable multiple tab rows.) Cycled between tabs, refreshed, navigated around FB, GMail, etc. Can't get the CPU to do anything out of the ordinary.
eslaught 8y ago
Similar to the sibling comment, I can't seem to repro. I switched "More Space", restarted Firefox, loaded up a dozen or so tabs. I even watched a YouTube video for about 10 minutes. The video did cause CPU to jump a bit, but it dropped when I unloaded the tab, and nothing I've done (including the video) has caused any sort of lag like described in your first post or subsequent follow-up. I'm not sure what to say. I'm sure the issue is real, but it seems like we're missing something in the triage. There has to be something else that makes a difference.
mercutio2 8y ago
I very much doubt that “most” developers use “More space”. Most developers in their early 20s seems plausible, but even there, I surveyed my team’s younger cohort, and it was less than 50%.

blt 8y ago

I have my display set to "scaled". I get the worst slowdown when streaming videos. 2013 15" w/ Nvidia gpu.