MacBook Pro M1 chip’s drained 50% in an hour while gaming!

Hi Apple, I received my MacBook Pro with M1 chip13 inches with 16GB ram. I tried to use it to play Tomb Raider game today. I set the resolution to máximum : 2880 x 1880, and in some moments of the game half of the the screen just failed to show image and it was so awful...

then I restarted the game and things got back to normal, but an incident like that happened to a completely new MacBook Pro with M1 chip? what’s going on??

Another problem is even worse. I left the computer on for an hour with the game loaded then after an hour the battery dropped from 100% to 47%!! I was Siiu shocked and disappointed! I saw many comments about this model everywhere including your official info saying that it has 18 hours battery life, I know it won’t last for so long for intensive gaming, but 50% after 1 hour ??? I think it’s completely disappointing! Should I get a refund? Should I replace it? I feel so bad. From the photo you can see my battery dropes dramatically in an hour!