MBP 13 2018 - Safari stutter/glitch/freeze - can someone please test?

I have this issue on the 2018 MBP 15" with i9 and 32Gb. In my experience/observation, this issue only happens after the machine woke up from sleep. For me it's like that every morning. If I don't let the machine get to deep sleep during the day, it will never happen. I think it may be a power management issue they need to fix in an update.

Hello,

This is the fix that I applied this morning that worked permanently. It also confirmed that it has nothing to do with a hardware problem.

**HDCP Errors iTunes\Safari fix**

Symptoms:

*You had to reset the PRAM on your Mac for whatever reason

*iTunes movies won't play. You either get a black playback window or an error related to HDCP.

*Hulu and Netflix movies won't play within the Safari browser.

*YouTube is unaffected by this.

*Hulu and Netflix still play within Chrome web browser.

*Windows 10 (VM nor Bootcamp) are unaffected by this bug

Fix (workaround):

*Boot into Recovery Mode on your Mac (command+R)

*Open terminal and type in the command EXACTLY as written:

nvram 8be4df61-93ca-11d2-aa0d-00e098032b8c:epid_provisioned=%01%00%00%00

and then press RETURN

It will go back to the prompt. Type reboot and RETURN.

BE sure NEVER TO RESET NVRAM UNTIL APPLE CONFIRMS IT IS SAFE TO DO on these new Mac models.(mine is 2018 MacBook Pro)

I updated to Mojave 10.14.1 and the stuck trackpad pointer in Safari seems to have stopped as well. Seems to be fixed!

that's odd, I just ran the latest Safari update for High Sierra and the issue is gone (so it seems). This is a work machine so I'm not updating to Mojave yet

I have the same issue and it only seems to occur within Safari on certain webpages. Usually pages that have embedded ads or videos. For instance it does not occur here on Apple's support forum but it does occur on the Bloomberg and 9to5 Mac sites mentioned earlier. Both have video ads embedded

I have the same issue in Safari when using an audio streaming page with some ads. The mouse seems to want to enlarge and jerk to a halt on all the links. I am not experiencing this nearly as bad in Chrome for whatever reason.

I have the same problem with my 2016 MacBook pro with Touch Bar. I narrowed the problem down to video playback of certain websites (but not youtube).

I have a MacBook Pro 15" 2018, 2,2GHz i7, 32GB and have the same issues. Websites with videos are stuttering, also when I'm using FaceTime the video freezes constantly. The problems started after upgrading to MacOS Mojave. Afterwards I performed a clean install but that didn't help.

Same problem on a 2016 13" MBP nTB. Running High Sierra 10.13.6

Was experiencing mouse pointer lag in both Safari and Chrome while watching video.

Reset PRAM/SMC.

Now I only experience the pointer lag in Safari (I.e. Chrome works).

Haven't tried the nvram/terminal hack yet.

Same thing happens to me when visiting Yahoo Finance website or watching video in Tweetbot on MacBook Pro 13.3" 2017 on High Sierra 10.13.6

I am having the same problem on the same websites and with media playback. Mojave update fixed nothing.

Any other ideas? Has anybody tried the Apple Store?

Same issue here. I have tried everything to get rid of the problem, but so far nothing. I'm going to install the latest Mojave beta to see if it still occurs there.

(Even a clean install onto an external drive of High Sierra exhibited the same behaviour).

I have the same issue. I noticed it on yahoo.com and 9to5mac.com. I run a 2016 MacBook Pro 13" Touch Bar. I have noticed the problem for a few months now. I went so far to reinstall the OS with no luck.

I just started experiencing the same thing on my MacBook Pro (13-inch, 2016, Four Thunderbolt 3 Ports).

It's exactly as you describe and exactly as your video shows. It seems to be the worst when Twitter is open in a browser tab.