VHS Chroma Problems

[Faulty]

Hi,
I’ve only recently tried my hand at capturing and restoring some VHS material. I used this forum at lot and my first attempt provided rather good results. However I am having trouble with a particular tape which I believe is rainbowing or colour banding. I’ve taken a screen grab of it below however it can be seen through the whole 50mins tape and is most obvious on whites (particularly when deinterlaced).

I haven’t been able to get rid of it using any filters and was wondering if anyone had any idea what was causing it and how I might be able to fix. I’ve tried different VCRs and Capture Cards but with the same result, however I haven’t been able to track done a VCR with an S-Video output. Before I go and buy VCR with S-Video output I was hoping people may be able to give some advice as to the direction I should go.

Cheers.