How to make servo smooth in SR6?

Hello guys, I got a problem with new servos in the SR6 being too jerky. The first types used, LD20MG and LD27MG, were smooth, but loud and died quickly. Then I tried DS3230 Pro-180 and the jerkiness was a disaster, with my zero servo knowlege I thought, probably bad batch from AliExpress, so I tried the coreless DS3235SG. Super smooth and long lasting, but very loud. In search of something quiet I ordered the brushless SPT5835W, but again, very jerky operation. On my last attempt to find something usable I decided to not cheap out and bought the most recommended Flash Hobby M45CHW servos…and bad luck. They are so rough they almost turn the SR6 into a vibrator. After having 3 different types of servos with such issues, I’m thinking I’m probably missing some detail in the circuit build. I tried different ESP32 boards (CP210X and CH340), the coreless DS3235SG works smoothly on all boards, all the other servos have very rough movement on all boards. Tried different firmware versions. Tested also with laboratory power supply to rule out there wasn’t enough current. Is there some way to adjust the servo (internally maybe or in Khrull’s firmware?), is there some kind of interference, or is it just how some servos operate?
Thanks for advice

hey I also ran into the same problem with the M45CHW servos being rough and vibrating when running. It seems that it happens if you run the M45CHW servos above 5 volts.

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Today by coincidence I’ve found, that servos in my OSR2 are getting jerky if in MFP update type (in “update settings”) is set as “fixed update”. In “polled update” it started to run much better - as if the servo was receiving too much data?

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Just adding some additional info, if anyone is interested. Ordered two more types, 9imod DSC35MG and even quite expensive Flashhobby BLS3837MED from their respective AliExpress stores, and the result is the same, even with high quality Mean Well 5V PSU and frequency tinkering with different firmwares. So to those, who are searching for smooth servo, save yourself the hustle and money and stick with DS3235SG, if noise is not a concern to you.