SourceSplit by Fatalis (the plugin to time without loads) is only available for LiveSplit. You wrote "can I time my runs with loads with WSplit". Yes, but you'll be missing the without loads time in your run submission and thus you'll have to write your RTA time as IGT in the leaderboard. I recommend LiveSplit.
i used livespilt without loads while in the run after I retimed it with wspilt with loads
What Do you know that LiveSplit times both without loads and with loads ? LiveSplit > Right Click > Compare Against > Game Time/Real Time
You can edit your run awaiting for verification by clicking on the clock in the top right corner.
Starting today, runs that require video proof (top 25) and runs beyond that where video is the only form of proof, now require audio, as recording audio for only the game is now a native OBS feature.