What is going on with PS 2025? It is trash!! Tons of crashes! Slow, network opens locks up Mac...[]

Interesting, thanks. I knew it is important but didn't realize how ubiquitous.

@MarkDS 

As c.p. says. It's always the first thing you try. And surprisingly often it's all it takes.

Recently, I lost the brush cursor circle. Resetting prefs fixed it. Another time, a while ago, some of my panels (not all) started to lag with jerky sliders. Resetting prefs fixed it.

The point is, these are rather weird symptoms that you normally wouldn't suspect your preferences to be responsible for. There are no user settings for this. But the prefs contain the entire application configuration, and a lot of switches that are thrown in the background. Anything that has changed since it was taken out of the box. 

And to the user, it all looks like "bugs" 😉

Restoring Preferences is basically the all-purpose-trouble-shooting-routine for inexplicable Photoshop issues. 

So, D Fosse, I suppose you would recommend deleting and re-establishing preferences as perhaps the easiest and most harmless first step to resolution, just in case that's the issue?

Just as a general observation, Photoshop's hardware and system requirements increase with every new version. But your computer is standing still, and at some point components will become obsolete.

Another frequently overlooked potential problem is migrating preferences from the old version. Preferences are prone to corruption because they are rewritten on every application exit. Irregular shutdowns can corrupt them, and errors can accumulate. Settings may not mean exactly the same thing with new code. Corrupt preferences can cause all sorts of weird behavior - very often mistaken for "bugs".

I can understand your frustration when something you have been working with for a long time ceases to perform as expected upon an upgrade. I can also understand that with the infinity of operating environments out there and the enormous size and complexity of the Photoshop application code, compatibility glitches can arise that elude whatever kind of QA they are doing - and my understanding is that the ratio of QA staff to developer staff is very high at Adobe, but.....   So the issue is to find out what's going on. The people from Adobe monitoring this forum know their own application, but they don't know your computing environment. So it would be useful to share information about the versions of MacOS and names and versions of all other applications you have running that could affect communication between your photos and Photoshop. That may help them diagnose what's going and get you fixed-up. It's fine to be upset, but cool-headed diagnosis is the only way this gets fixed.

Please cut back on the inappropriate tone. 

Please read this (in particular the section titled "Supply pertinent information for more timely and effective answers”):
https://community.adobe.com/t5/using-the-community/community-how-to-guide-tips-amp-best-practices/td-p/11601738?page=1

What have you done for all-purpose trouble-shooting and with regard to Performance-releated Preferences settings so far?