ChuckMN

I'm running it on my 2015 Mac Book Pro. Only issue is a couple of 5 year old games that I haven't played in about 4 years don't work. Otherwise, flawless.

SteveG Loc: Norh Carolina

Me Too! I'm still printing with the Canon Pro 9000 Mark II so, if anyone is also printing with that, you cannot go beyond Mojave. Catalina eliminated 32 bit programs. Mojave is just fine. Too many updates with Mac. IMHO.

SteveG Loc: Norh Carolina

For anyone printing with a Canon Pro 9000 Mark II or any other 32 bit printing program, if you haven't updated to at least Catalina, you might want to hold off on updating past Mojave. Mojave is the last update that accepts 32 bit. If you don't have to, and you don't want to purchase a new printer.

DanCulleton

No problems.

Carl S

I upgraded about ten days ago, and initially had a problem getting the upgrade to load. I'm running a MacBook Pro 13 inch, early 2013 with max storage. So far, everything is working fine, although the upgrade scrambled my in-boxes on my mail program, but was finally able to sort them out. The Junk and Trash folders disappeared, which seems to be common problem with the upgrade I used. Thus far, no problems!

leftj Loc: Texas

Funny, I had none of these problems. Every time there is a new IOS upgrade you read about all these problems. I have yet to have any problem with any IOS upgrade.

Jbat Loc: Charleston, SC

I have been running it for about a week on a MacBook Pro with no problems with any of my programs or the computer.

317tman Loc: Indianapolis, In

I only updated to Catalina a few days before Big Sur came out. I held off since I didn’t want to loose use of CS3, but now use Affinity which works fine. Also my old Canon i9900 printer still prints from Affinity under Catalina; I was worried about it working. I will wait 3 or 4 months before going to B.S. there are always a few bugs to work out.

Brucej67 Loc: Cary, NC

Luminar 4 as a plug in to Photoshop does not work.

burkphoto Loc: High Point, NC

Some folks still rely on old, out-dated, obsolete, behind-the-times 32-bit software. The last MacOS that will run any of it is 10.14.6 Mojave. Your app may require an earlier OS.

In my case, I still use Digital ICE with Epson Scanners, which is 32-bit. I keep an outboard startup drive that runs Mojave, just to run that Epson Scan app on my iMac. It won't run under Catalina or Big Sur. Epson Scan 2 does not support Digital ICE on my scanners. Bummer!

ALL upgrades of operating systems make something obsolete, or require updates or upgrades of other software. That's the messy price of progress.

lensmaster Loc: Chicago

Since I updated PHOTOSHOP AND BRIDGE I was forced to upgrade the OS to CATALINA. Doing so killed any and all profiles and drivers for EPSON products, along with having major issues with some 3d party graphic applications.
Not happy.

Contacted APPLE SUPPORT, which from experience denies Any problems, and they said 'sure, in CATALINA all Epson drivers are now gone. Bye'.

Telling this story brought me to investigating the 'NEW' OS BIG SUR. Again, contacted APPLE and the tech I dealt with said that BIG SUR is really targeted for the new tablets and laptops with the brand new processors (I run 3 27" IMacs, plus a few older laptops- (all are three years or greater older). The tech said that the BIG SUR update would not really add to my performance baselines. AND- some graphic software (3d party plugins for PS) 'may' have issues. OF course, EPSON will still be screwed up. EPSON says that drivers will be 'updated' on a rolling schedule...and that is a Slow Roll.

SO- I would caution anyone who thinks about going to BIG SUR. ESPECIALLY if you are running a Mac that is older than 1 year.

Just my impression.

xt2 Loc: British Columbia, Canada

Too early for me...

Paaflyer Loc: Kansas City, MO

I have year old iMac. I updated immediately. I run Adobe apps with using the subscription service. I have had zero problems. Everything is as before. I use a canon Pro 1000 via a LAN cable for photo printing. It’s ok. I use an Epson office printer via WiFi and it is working fine. My Quicken software is fine too. It did an update a day or two later.

Xpatch Loc: New York, Antigua, GT.

I have it and have had no problems