Severe lag and freezing after macOS Tahoe update on MacBook Pro M1

Having the same problem. I ran EtrePro - here's what it reports - the major issues were No system uptime found and No operating system found. Huh?!?!?!

Any ideas?

Update: It worked. Its amazingly fast now!!

deleted the coreservices index

What path was this, exactly?

I tried the turning it off the iCloud sync and nothing. That doesn’t solve the problem. Mac OS is the new windows now! It gets worse and worse on every update

I feel dumb but how do I find these files in finder?

It is one of the most sluggish operating system Apple ever delivered. Even iOS is sluggish and buggy.

Same here but it is for my M4 Macbook Pro!! I just got it in June this year! And it it slower than my old M1 Macbook pro which is running Macos 15 (my old mac)

how do you get to this Library metadata corespotlight?

Fully agree with the author of deleted message :)

Biggest question so far - 26.2 is more stable? My Mac insists that I really need to update.

Also you may want to be mindful that the experience we all describe is not what less tech savvy users may be trying to report on this forum.

Thing is, the user should;t have to do anything.

I didn't have to do anything. Tahoe has worked for me without issue.

Yep. Exact same thing happening RIGHT NOW Jan 19, 2026 932AM EST.

I’ve used this as well: but notice it only lasts for so long … 

I’m getting this issue, as well … 

nico4d wrote:

The experience has been terrible for the last week. After a few hours of use, restarting becomes imperative. The mouse pointer and windows lagging behind every click and drag, sometimes appearing and disappearing randomly all over the desktop.

Please Apple, update Tahoe ASAP!

I'm running it on MacBook Pro M1 Pro 1TB (half empty) 32Gb Ram

I would try reinstalling the macOS on top of it self to sort upgrade anomalies like yours

How to reinstall macOS

Recovery (both M1/M2/M3/M4 and Intel) — How to reinstall macOS - Apple Support

if no resolve—

You can get a good look at your User/System config. and reveal conflicts or issues, you can download/run this trusted utility https://etrecheck.com

If you need help interpreting the report you can post it here in its entirety in the "Additional Text" box in the editing toolbar below, in your reply.

unplug all non-essential peripherals when testing

Uninstall all third party apps that are Cleaners/Optimizers/VPN/Anti-Virus

all known to cause issues on the macOS