OBS has "oPtiMisEd" my video to 700mb and 0.07 fps

I shot a video in a resolution of 2560x1440 with a length of 45 minutes. I knew that the video would take up a lot of space on the PC and therefore cleaned the computer beforehand. I took a video and sat down to mount it, when suddenly I see that it weighs 600 megabytes (which is not enough for 2k video at 60fps), I go to look and see 4 frames per MINUTE. I checked all the settings and there is no check mark anywhere to make the obs degrade the video quality. damn, I'll need to submit this video by Monday and there's not enough time to collect and shoot everyone the second time. well, thanks, obs developers :(