I love Undertale, I think its a great game and I've always wanted to speedrun it. However I play on an Xbox series X and don't know how to record my gameplay with sacrificing my performance. Will it be ok if I record the TV with my Phone and upload the relatively decent quality or is there a free application that I can download to record.

I really appreciate any and all advice

Thank you :)

Try and use the phone and punch card glitch

If your on both console and PC, just spam to skip text

Yes, you can record your TV with your phone as long as we can see what's happening in the game