iMac M3 slowing down...
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.