Instagram accessed via safari loads videos in low resolution

Instagram accessed via safari loads videos in low resolution. I am facing this issue since the new Tahoe 26.5.2 update. The videos simply load in a very poor resolution when Instagram.com is opened via Safari browser. This does not occur when it is accessed in Opera or Chrome. Can anyone tell me why is this happening? My wifi speed is ~290Mbps download and similar for upload. Can anyone help me fixing this issue?