The Sony SLV-SE600 is a generic low-end consumer VHS VCR, nothing remarkable about it. Quality will be subpar.
VCR > capture card does NOT work as a workflow. Some sort of TBC is required. Preferably, an actual TBC. (Don't let TBC costs scare you: buy it, use it, resell it.) At very minimum, you must use an ES10/15. It's a TBC(ish)/TBC-like, with a crippled line TBC (which will correct the image quality here) with a basic frame sync (not framesync TBC, aka an actual TBC) that may help. There will be a fail rate, but the fail rate for
VCR > capture card can be 100%. Not that a TBC(ish) has side effects, quality hits, not transparent -- but also far superior to NOT having any form of TBC whatsoever.
That capture card is a generic Chinese "grabber", and is terrible quality (unstable, washed out images, lost colors). You really want something known for quality, like the ATI 600 USB (see marketplace subforum). When your VCR is already not ideal, and you're using a TBC(ish), capture card matters even more.
Most reviews do not speak to a product, but the knowledge (or lack thereof) of the reviewer. Same for the quality of an item. Some people are satisfied with any image, even if blurry and unstable, with audio that hard to hear/understand (5 out of 5 stars!!!") A person is smart, people are stupid. Aggregated
Amazon reviews mean nearly nothing, aside from how many are sold (FYI: cheap stuff sells more).
What you've read about sync, cheap cards, dropped frames, etc -- that's accurate. Heed the warnings.