Thanks for the interest and info, and questions. Problem did turn out to be motor.
I am using a Pokeys57cnc controller, Pokeys 60-256 drivers, 2510 ballscrews, and a7.2a 48v power supply on a round column conversion mill. All but Z is on a 2-1 ratio, while z inherently with worm gear is 10-1 use same pulley. I was initially using 3nm nema 34 3a EAD motors i had bought used, but seemed to run well in all previous testing. I swapped out the Y axis motor for a 4nm 80mm 4a Sumtor motor that was brand new and had the light go off in my head. 110 velocity is so quiet and smooth in comparison. I will be switching out the other 2 axis with 3nm 66mm 4a Sumtor motors that i already had on hand. Luckily, i had bought these over a year ago when the price was exceptional, literally less than half, compared to current pricing on these motors.
While the electronics and configuraion are usually the main suspect, used motors i have learned can be as well.