My was setup:
Raspberry pi 4 model B Rev1.2 (Stock Clocks) Raspberry Pi4 Argonone Case Retropie 4.6.8 43' 1080p TV 8bitdo controller Using 5ghz WifiOnly occurs on stuff like SNES, NES, and similar 2D platforms, but as i mentioned before using a custom aspect ratio with 1 less pixel on Y & X axis than core config seemed to fix it. Bilinear Filtering, and Interger-scale also fix the tearing aswell not sure if there are other fixes though. V sync is on any everything.