k, I've now got a latest version of ROMS 228, and the matching MAMEUI64 .228, still having this problem.
tried many combinations, but none are fixing it.
188 works perfect, newer does not. got the latest W10 updates, latest NVideo game drivers, 188 is tear free.
Oh well. I'll just keep 188 set installed also. GUESSING some newer MAME driver updates somehow crippled my NEWZEALAND STORY game refresh rate, where older 188 drivers worked okay.
Thanks for trying to help.
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