I'm having the same flicker problem. Particularly bad when on Citrix logging in to remote work machines. My setup: Running macOS Big Sur Version 11.1 (20C69) MacBook Pro (13-inch, 2019, Four Thunderbolt 3 ports) Processor: 2.4 GHz Quad-Core Intel Core i5 Memory: 8 GB 2133 MHz LPDDR3 Graphics: Intel Iris Plus Graphics 655 1536 MB Two Dell U2419H monitors