I tried but it spits me back instead of going through the wall

You can post a run without a video, but if you want to speedrun on a stream, you will have to find a less demanding program (such as Mirillis Action, but keep in mind that it has fewer functionalities than OBS).

попробуй без save/load

А разве для этой команды нужен sv_cheats?

уффф, машина

хз поможет ли но попробуй прописать это в параметры запуска: +mat_dxlevel 90 +mat_hdr_level 2 +mat_hdr_enable +mat_fullbright 0