Dàjiā bié shuāpíng le, qún lǐ dōu kàn bú dào zhèngcháng xiāoxi le.
Everyone stop spamming, no one can see normal messages in the group anymore.
Tips
usage
刷屏 can be neutral (a trending topic flooding everyone's feed) or negative (someone spamming a group chat). 朋友圈刷屏 means 'going viral on WeChat Moments.'
memory
刷 means 'to brush/swipe' and 屏 means 'screen' — picture someone swiping their screen and seeing the same thing over and over.