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I always do a clean install. It can be a chore, but perhaps that's why I never have any problems.

I've never done a clean install. My system has a lineage straight back to my first install of OS X, but I do know how to weed out junk from my Libraries folder and find pockets of hidden storage. I prefer to pull out the weeds than to re-sod the whole lawn. I have lots of legacy software licenses and starting over is just both too risky and time consuming.

I've managed to remove around 200GB of kruft from my 2TB drive that wasn't doing me any good over the past couple of years.
 
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Lucky! I’m jealous. My brother spent 12 hours trying to get Xcode installed yesterday. I’ve had to force quit an app (most often finder) nearly hourly due to unresponsiveness. Everytime I disconnect from my TB dock I get a kernel panic. Connecting to remote disks on other Macs on the network frequently drops to zero bandwidth. My control center has a memory leak and needs to be terminated regularly. Many apps perform slower on this than my M1 air for some reason (100% utilization on M1, 20% on M1 max). My mother’s MacBook Pro arrived Tuesday but is still in the box since trying to set up such an unstable machine would not be a good idea for her. I truly am happy it’s worked for you, but mine and my brother’s experience has been quite frustrating. I’m about at the point of clean installing and crossing my fingers that helps, something I’ve never had to do on a Mac before.
I always opt for a clean install at the outset. I also partition my drive and have different OS versions on the different partitions. Rarely do I upgrade to the latest OS on my main partition until a bit later when most major bugs have been realized and dealt with. This is just the nature of software in my experience.

Sorry that you’re dealing with these issues — for me, tech issues can sometimes drive me to the brink. I just have to step back for a bit and regain my composure.

A clean install sounds like a good idea. Maybe consider using an older version of macOS as well? Does anyone know if the M1 Macs limit the versions you can use? Depending on the software you use, you might be able to work with an older stable OS. Apple-specific apps, like Xcode, may require a newer OS.
 
I've never done a clean install. My system has a lineage straight back to my first install of OS X, but I do know how to weed out junk from my Libraries folder and find pockets of hidden storage. I prefer to pull out the weeds than to re-sod the whole lawn. I have lots of legacy software licenses and starting over is just both too risky and time consuming.

I've managed to remove around 200GB of kruft from my 2TB drive that wasn't doing me any good over the past couple of years.
That can be risky, especially when one could accidentally root out wheat with the weeds (I like your analogy). You sound like you know what you’re doing, but I think it could be problematic for most users. Any tips you could share would be appreciated.
 
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I always opt for a clean install at the outset. I also partition my drive and have different OS versions on the different partitions. Rarely do I upgrade to the latest OS on my main partition until a bit later when most major bugs have been realized and dealt with. This is just the nature of software in my experience.

Sorry that you’re dealing with these issues — for me, tech issues can sometimes drive me to the brink. I just have to step back for a bit and regain my composure.

A clean install sounds like a good idea. Maybe consider using an older version of macOS as well? Does anyone know if the M1 Macs limit the versions you can use? Depending on the software you use, you might be able to work with an older stable OS. Apple-specific apps, like Xcode, may require a newer OS.
Can’t use older MacOS, the new MBP shipped with Monterey. I haven’t upgraded any of my machines, just stuck on this half-baked release on the new one. Hoping it will be stable by version 12.2. I have documents from Pre-OSX days on my main install, it’s never been much of a challenge to migrate from one mac to another, so I tend to believe it’s the new software more than the old files.
 
I couldn’t care less how many hertz exactly the screen is running at at any given second, i’d rather just focus on actually using the machine and getting work done.

All I care about is that the screen feels greatly smoother and nicer to use in general, therefore i’m satisfied, and I couldn’t care less if Safari isn’t running at 120 yet. Every mac before this has been 60hz, including safari, so i’m more than used to it and it was never an issue in the first place.

Either be patient for the fixes to come or simply return it, instead of making these dumb threads like any of us are able to fix your safari scrolling. On a hardware level the screen does reach the advertised refresh rates anywhere where an app is optimised so there’s no issue with Apple advertising it on their main page.
Do other people's opinions frighten you?
 
Can’t use older MacOS, the new MBP shipped with Monterey. I haven’t upgraded any of my machines, just stuck on this half-baked release on the new one. Hoping it will be stable by version 12.2. I have documents from Pre-OSX days on my main install, it’s never been much of a challenge to migrate from one mac to another, so I tend to believe it’s the new software more than the old files.
Big Sur should run on the new MBP. Can you test this to see if that fixes the issues?

Other than this, have you contacted Apple Support to get to the bottom of this? It should be easy to screen share so they see exactly what’s going on.
 
That can be risky, especially when one could accidentally root out wheat with the weeds (I like your analogy). You sound like you know what you’re doing, but I think it could be problematic for most users. Any tips you could share would be appreciated.

I use the storage tools that are available in About This Mac to first weed out the easy to identify junk and then I use OmniDiskSweeper to help me identify directories that are unusually large. Most of those directories will be under your main User(s) Libraries directory so I target that from the get go.

If you see a Library folder that's several GB in size, that's a sure sign that it's not just configurations and preferences in there. Closer inspection will often reveal that a program is storing backups that never get cleared or there's a file cache from a long removed program still hanging around.

I mostly don't chase down every obsolete preference or configuration file so long as they're not consuming a curiously large amount of space. To minimize any risk, I keep plenty of backups.

The Apple Photos app is also another common culprit and it can even follow you through a clean install. If you've been using the app since it was iPhoto, there's a chance that the original untouched iPhoto library is still embedded inside the Photos package. Right click on Photos and choose "Show Package Contents" and there could be a compressed backup that MacOS made of the original library when it was converted from iPhoto to Photos.
 
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Wow. How quickly the world owes you something that didn’t exist a month ago.
 
It absolutely does not work fine. I only see 120hz on Podcasts or News. Apples built in browser can’t even do it. Insanity for a $2k machine.
And the Twitter app for macOS made with catalyst. It gives you a good idea of what ProMotion in Safari should look like.
 
The hardware and the OS support ProMotion, as advertised.
Clearly not software side, since it doesn't work in Safari

Would you consider a screen that is capable of showing 120hz and not displaying it 90% of the time as being what you were advertised? Because then you're just being delusional
 
If there is something higher than a 1st world problem, this issue would classify there.
(1/2 world problem maybe?)
Anyway, I'm not worried. It will be addressed in a software update.
 
Clearly not software side, since it doesn't work in Safari

Would you consider a screen that is capable of showing 120hz and not displaying it 90% of the time as being what you were advertised? Because then you're just being delusional
We're still waiting for many native M1 applications as well. Those that aren't fall back to emulated mode. Those apps not 120 hz ready fall back to 60 hz.
 
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