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
rsalama
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New York, NY, United States