Old "pro" tank VCRs like that were made for specific uses, usually SP only and geared to recording. Playback is terrible, sometimes even worse than consumer VHS VCRs (which are laughably crude compared to a good JVC/Panasonic from the late 90s or 2000s).
You need a new better VCR. That one won't work.
FYI, I still have a few of the suggested model VCRs available, and in perfect condition. I re-tested them thoroughly before listing, unlike the "tested" junk you find on
eBay/etc. PM me if interested. An external TBC is also suggested, but at least start with the good VCR. I have an entire available workflow, too (VCR, TBC, cature card). This gear is all listed in the marketplace right now.