I am using two monitors that are actually TV, with HDMI and VGA inputs. Until a month ago, if I changed the HDMI to a Sony TV, everything was perfect (audio and video). For a month this option no longer works, the screens automatically start to flicker, the sound or video stops, and it does not stabilize. I switch back to the other monitor / tv, and without doing anything it works fine. I swapped HDMI cables for new ones, and even attached the one that works to the Sony TV, and again the problem. I downloaded Catalyst, Crimson, all kinds of drivers for Radeon HD5450 and nothing works, not even updated Windows 10 drivers and patches, even the latest version of October 20 (Windows 10 PRO 20H2). What can be the solution. Thanks a lot.
(Excuse the google translation)
