MCT8329EVM: Regarding very low speed setting

Hi support team.

My customer is experimenting with a very slow rotation setting on the MCT8329EVM.
When they gradually reduce the speed command setting from 50% Duty via I2C, a Loss of sync error occurs at around 25% and the motor stops.
The motor specs are below;

Rated voltage: 24V
Rated current: 5.6A
Maximum current: 7.5A (10 seconds)
No-load current: 0.35A
Rated torque: 1N/m
Maximum torque: 1.44N/m
Rated rotation speed: 210rpm
No-load rotation speed: 578rpm
Number of pole pairs: 14
L: Unknown
R: Unknown
Back emf coefficient: unknown

Although they achieved a rotation speed of less than 100 rpm, there is a high possibility that people will give up on using the MCT8329A because they do not know how to set it up.

Can you help me find the best settings?

The current GUI settings are below.(I cannot attach the json file.)

"idx\":5,\"id\":\"ctrl6\",\"value\":\"0x00\"},{\"idx\":6,\"id\":\"ctrl7\",\"value\":\"0xFF\"},{\"idx\":7,\"id\":\"ctrl8\",\"value\":\"0x0F\"},{\"idx\":8,\"id\":\"ctrl9\",\"value\":\"0x00\"},{\"idx\":9,\"id\":\"ctrl10\",\"value\":\"0x80\"},{\"idx\":10,\"id\":\"ctrl11\",\"value\":\"0xFF\"},{\"idx\":11,\"id\":\"ctrl12\",\"value\":\"0x20\"},{\"idx\":12,\"id\":\"ctrl13\",\"value\":\"0x10\"},{\"idx\":13,\"id\":\"index 1\",\"value\":\"0x80\"},{\"idx\":14,\"id\":\"index 2\",\"value\":\"0x80\"},{\"idx\":15,\"id\":\"index 3\",\"value\":\"0x80\"},{\"idx\":16,\"id\":\"index 4\",\"value\":\"0x82\"},{\"idx\":17,\"id\":\"index 5\",\"value\":\"0xB5\"},{\"idx\":18,\"id\":\"custom_ctrl1\",\"value\":\"0x00\"},{\"idx\":19,\"id\":\"custom_ctrl2\",\"value\":\"0x00\"},{\"idx\":20,\"id\":\"custom_ctrl3\",\"value\":\"0x00\"},{\"idx\":21,\"id\":\"custom_ctrl4\",\"value\":\"0x00\"},{\"idx\":22,\"id\":\"custom_ctrl5\",\"value\":\"0x00\"},{\"idx\":23,\"id\":\"custom_ctrl6\",\"value\":\"0x00\"},{\"idx\":24,\"id\":\"custom_ctrl7\",\"value\":\"0x00\"},{\"idx\":25,\"id\":\"custom_ctrl8\",\"value\":\"0x00\"},{\"idx\":26,\"id\":\"custom_ctrl9\",\"value\":\"0x00\"},{\"idx\":27,\"id\":\"atq_ctrl1\",\"value\":\"0x00\"},{\"idx\":28,\"id\":\"atq_ctrl2\",\"value\":\"0x00\"},{\"idx\":29,\"id\":\"atq_ctrl3\",\"value\":\"0x00\"},{\"idx\":30,\"id\":\"atq_ctrl4\",\"value\":\"0x20\"},{\"idx\":31,\"id\":\"atq_ctrl5\",\"value\":\"0x00\"},{\"idx\":32,\"id\":\"atq_ctrl6\",\"value\":\"0x00\"},{\"idx\":33,\"id\":\"atq_ctrl7\",\"value\":\"0x00\"},{\"idx\":34,\"id\":\"atq_ctrl8\",\"value\":\"0x00\"},{\"idx\":35,\"id\":\"atq_ctrl9\",\"value\":\"0x00\"},{\"idx\":36,\"id\":\"atq_ctrl10\",\"value\":\"0x08\"},{\"idx\":37,\"id\":\"atq_ctrl11\",\"value\":\"0x0A\"},{\"idx\":38,\"id\":\"atq_ctrl12\",\"value\":\"0xFF\"},{\"idx\":39,\"id\":\"atq_ctrl13\",\"value\":\"0x05\"},{\"idx\":40,\"id\":\"atq_ctrl14\",\"value\":\"0x00\"},{\"idx\":41,\"id\":\"atq_ctrl15\",\"value\":\"0x00\"},{\"idx\":42,\"id\":\"atq_ctrl16\",\"value\":\"0x00\"},{\"idx\":43,\"id\":\"atq_ctrl17\",\"value\":\"0x00\"},{\"idx\":44,\"id\":\"atq_ctrl18\",\"value\":\"0x00\"},{\"idx\":45,\"id\":\"ss_ctrl1\",\"value\":\"0x00\"},{\"idx\":46,\"id\":\"ss_ctrl2\",\"value\":\"0x00\"},{\"idx\":47,\"id\":\"ss_ctrl3\",\"value\":\"0x00\"},{\"idx\":48,\"id\":\"ss_ctrl4\",\"value\":\"0x00\"},{\"idx\":49,\"id\":\"ss_ctrl5\",\"value\":\"0x00\"},{\"idx\":50,\"id\":\"ctrl14\",\"value\":\"0x00\"}]]}"

Best regards,

Higa