Download Faststone image viewer. It's free, and you can review all of your images by scrolling, no waiting between files. 

yes I know but I noticed HEIF in 4:2:2 take about 1,5sec to open on my computer, when I can open 4:2:0 nearly in instant..maybe it does not look that much but when u have 1000 or 2000 files to watch and sort it's a difference. 4:2:0 has already a better quality than Jpeg and is lighter too, not sure I need extra color info of the 4:2:2 for postprocessing, except maybe in rare case. Maybe I'll mix both depending on the situation. Anyway thanks for your infos

Do you notice it for every photo you take? I don't think it's the sensor since it's not in the same place. I had something similar when my SD was failing. Maybe check with another card.