I hear you. I returned my first one and my second one has the same issues. My brother also has issues with his 2nd phone. I installed the latest patch, but still the issues remain.
Something tells me all the s20 FE's have this issue. Some users don't notice it or are choosing to live with it. However, the device is $950 in Canada and not worth it with theses issues.
Does anyone know what other non-Samsung phones are similar in specs?