When watching WWE on catch up on the BT website if I skip ahead the video will lag for a few seconds and then play and I briefly get artifacts on my monitor (little blocky squares), I have also noticed I get this if I go to a live stream after its started (UFC), rewind to the start then skip ahead. I have a Ryzen 5 5600x CPU and a RTX 3070 graphics card with a 850w PSU and 32gb DDR4 ram. I don't get any artifacts anywhere else only when I'm playing videos off the BT website. I have used the BT TV player instead as I don't get any lag or artifacts when using that. Does anyone know a fix for this issue please?