When will Youtube allow us to disable "Ambient Mode" permantely? it's lagging my PC badly!

I have to disable it manually on every single video and short each time. it wont let me disable it forever! I have a good PC but still its slowing down my pc. and the video is sluttering badly too. i been browsing around on forums, looks like the problem been persistent for years and no one on youtube bothered to fix it yet! WHY???? its really bothersome. please get it fixed ASAP