Blip spinning circle buffering

[EQ1]

Hi all, 

I am on Sky Q and on fast enough  internet that streaming  downloading should be fast enough to watch before any buffering would be needed. I have set MTU so no packet loss and speed test is 140mbits.

some streaming 4k on netflix no issues. But on Sky Q 4k streaming I would get get spinning circle in centre for a few seconds on say paramount +  and on other app the  screen would randomly darken and show logo.

It's getting annoying hence why I've had to reach out to more who may have had similar issues or found solutions. Thankyou  if you do