I've iMac M3 chip, Ram 24 GB, late 2023 running Sonoma 14.6.1 and a week ago I added a DELL Monitor P2423DE 23,8'' 2560x1440 IPS, USB-C, as an extension.
Sadly I realized that my iMac slows down and lagging and many times flashing.
I don't know why is this happening or if it can be fixed but I'm very very disappointed.
I'd appreciate any help.
Two questions…
I'm going to make the update and keep you up to date. Thank you for your prompt reply!
You're welcome. FWIW, in case you aren't aware, when you open System Settings > General > Software Update, it will list Sequoia. Just click on "more…" for the Sonoma update.
There's a big disappointment in my face the last few
days. Tested new thunderbolt cables, thunderbolt hub, hdmi...still
lagging. Even when only running Backgammon Masters with the second
monitor on I have a lag.
I also tested Indesign,
photoshop, msword, acrobat and firefox with 3-4 tabs open. I've 7GBs
free ram and the mouse is lags and sometimes jumps.
Just turning off the second screen and everything runs smoothly.
I updated to 14.7.2 but the only that fixed was the screen flashing.
Same problem...
iMac M3 slowing down...
