Login Screen very slow (laggy)

I have the same issue! Mojave login UI sluggish & laggy

Can you confirm you also have FileVault turned on?

If you do too, then the suggestion of booting in Safe Mode is totally irrelevant in my view - this is an issue prior to the OS being loaded, so it shouldn't matter which mode we choose to boot the OS in. Safe Mode merely boots the OS with the minimal set of drivers etc (excluding third party drivers, launch agents/daemons etc) to ensure maximum compatibility while forsaking system specific performance enhancements. It is a troubleshooting step to isolate issues.

However in this case, the HDD is not even mounted/decrypted yet - so there are no user / third party drivers etc even available or loaded that might cause compatibility issues and/or a performance hit.

Feels more like an issue with any new EFI/firmware installed alongside Mojave not handling FileVault enabled systems properly.

I also took a video showing the exact same thing and my rep wasn't even interested in seeing it: "I do not have the means to receive a video".

He actually asked me to call back in a week, confident that the problem will go away.

I disagreed and demanded he call me back in 3 days instead.

What about you? Where are you at with your case?

PS. My system config is almost the same as yours: MBP 2018 15 2.2 16GB 1TB Radeon 555x

Turning FileVault Off + Enabling Auto-Login cannot be the solution!

Not sure if you meant it as an interim solution or if you are happy with this as the permanent solution - you are turning your MacBook from a secure machine that requires your password to even mount and boot to one that is free for anyone to access!

You should continue bugging Apple support until they give us a fix! Don’t give up! Share the url to my post too so they know you are not alone experiencing this bug: Mojave login UI sluggish & laggy

The last issue you mentioned is not ‘normal’ behavior, or at least not what users expect. I’m expericing it too and it‘s not just us: Black screen + Apple logo after entering password

I'm not sure if this is the same issue, but I had a similar problem with a newer iMac that I was upgrading that I had done upgrades on for at least the past 10 years or so, so there was some cruft in there for sure. I was also experiencing extremely laggy performance once logged in, and the system would not recognize any network adapters or bluetooth devices.

Here's a link to what I did to solve this issue:

Re: Install Problems with Mac OS Mojave

Essentially, the process is to wipe your internal hard drive, do a clean Mojave install, then restore your data using Migration Assistant, but exclude the "More files and folders" from the restore (which excludes anything in the root and subfolders that are not in your User folders).

Obviously, the solution that Quirkz links to is a lot faster and easier, but if that doesn't work for you, then I hope maybe my solution might work for you instead.

I've posted a solution here that should hopefully resolve the issue for most of you:

Re: Mojave login UI sluggish & laggy

I'm afraid Apple deleted it 😟? I hope that's not how they fix problems 😟.

BTW I have the same problem, MacBook Pro 13" 2018. I upgraded to Mojave then downgraded because of this and some other issues (I didn't like lack of anti-aliasing on my Full HD external monitor). Unfortunately it looks like the new firmware (or whatever causes it) didn't downgrade so I have the same problem on High Sierra now, too.

This is also an issue for me on a brand new 13-inch MacBook Pro 2018 .

Unfortunately the issue is not just cosmetic or an annoyance; it's preventing me from using a Yubikey device for login (using a long, random static password for FileVault as I've done in previous versions of macOS). The Yubikey device simply acts as a USB keyboard in this case, but even with it "typing" the keys in the slowest setting possible, it's too fast for the Mojave login screen (w/ FileVault) to keep up, so characters are missed and it doesn't work.

I'm a fairly security-conscious person, so in my opinion, if a basic USB keyboard/password device can't be used for login simply because the UI is so incredibly unresponsive (I've had to resort to using a shorter, less secure password without the Yubikey in the meantime), then it actually becomes a security issue.

There are complaints on other forums about this exact same issue affecting people with similar USB security devices.

Please, Apple - if any of you come across this - there's no excuse (speaking as a software developer) for a login UI to have the responsiveness of a VNC connection over a 28.8 bps connection when in fact it's running locally on a 2.7 GHz Core i7 processor and 16 gb of RAM, with nothing else running. Graphics acceleration might not be available in an EFI prebooter (or whatever you call it), but this shouldn't need acceleration. It feels like there are some random sleeps thrown in there for debugging or something. Turn off the animations if you need to (I'd 100% rather have a snappy UI than watch 3 discreet animation frames of an attempted fade).

I updated to 10.14.1 beta 5 and it seems to have gotten much smoother. I'm hoping that when 10.14.1 update is released it will stay that way. Just wanted to let others know that it seemed to have been worked on in the next update.

I updated to 10.13.6 (High Sierra) and right after the update I got the login screen with just a blue background (instead of the blurry background picture) and it was super smooth! I thought that it's the fix but unfortunately after another restart everything is the same :-(.

there hasn't any solution for this problem yet ?

Could you please share the link again? It seems like there is some issue with the authorization of your post. Thanks!