Sonnet 10g rj45 connected to SPF+ port not working well

I have been using a Sonnet 10g (rj45) thunderbolt adapter to my laptop. I use it with the SPF+ port on my Mikrotik switch. I generally do NDI video.

It was working great till the last month. Now that video is choppy and missing frames. If I plug the same sonnet to a 1g port all works great.

Why would the SPF+ suddenly stop working great? I haven’t changed any configurations, I have tested different cables, different laptops and all four of my SPF+ ports are acting the same?

Make it make sense please.

I am not strong in networking, but I know enough to be dangerous.

I’m using some of them without problems at all.