Raspberry Pi4 Error while using 2 USB cameras, VIDIOC_QBUF: Invalid argument

I'm using Python OpenCV to read from 2 USB webcams on a Raspberry Pi4. If I'm using either of the camera individually they work fine. As soon as I initialize both cameras in the script as following: import cv2 cap0 = cv2.VideoCapture(0); cap0.set(cv2.CAP_PROP_FRAME_WIDTH, 1280) cap0.set(cv2.CAP_PROP_FRAME_HEIGHT, 720) cap1 = cv2.VideoCapture(2); cap1.set(cv2.CAP_PROP_FRAME_WIDTH, 1280) cap1.set(cv