Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

mdrm18

macrumors newbie
Original poster
Jun 8, 2017
8
0
Ever since I've updated to Big Sur, my 16 inch (32 GB Ram, i7, 5300M 4 GB) MBP when connected to the LG 5K monitor is incredibly slow. Sometimes the cursor is lagging, other times it's just lagging and sluggish.

I've tried:

1. Turning off graphic switching.
2. Turning off seperate spaces.
3. Closing laptop lid.
4. Completely wiping mac and reinstalling OS.

The only solution that works is disconnecting the 5K.

Any ideas?
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.