I am using KM player for the past few years. Recently I have updated to latest version (2020.3.24.15) before that the old version which I was using had the option to "start playback in half size etc." This is unavailable in the new version. Please help me resolve this issue.
Try use previous version and also give Daum Pot Player a try. It's made from the former KM player creator and has great customisation abilities and without bloadware that nowadays KM player comes with.