Help interpreting log data

[cofik1976]

I have a problem with the operation of my board. Sometimes everything works , sometimes I can't control the spa functions.
I made hwtest and here the data from it

Connect the cables now!
Starting test in 10 seconds...

Connect the cables now!
Starting test in 9 seconds...

Connect the cables now!
Starting test in 8 seconds...

Connect the cables now!
Starting test in 7 seconds...

Connect the cables now!
Starting test in 6 seconds...

Connect the cables now!
Starting test in 5 seconds...

Connect the cables now!
Starting test in 4 seconds...

Connect the cables now!
Starting test in 3 seconds...

Connect the cables now!
Starting test in 2 seconds...

Connect the cables now!
Starting test in 1 seconds...
Start test. Seq begins with HIGH, then alters.

Sending on D1, receiving on D6
---------------------------------------------------------------------------------------------------- // 0 errors out of 100
Sending on D2, receiving on D4
---------------------------------------------------------------------------------------------------- // 0 errors out of 100
Sending on D5, receiving on D3
---------------------------------------------------------------------------------------------------- // 0 errors out of 100
Sending on D6, receiving on D1
---------------------------------------------------------------------------------------------------- // 0 errors out of 100
Sending on D4, receiving on D2
---------------------------------------------------------------------------------------------------- // 0 errors out of 100
Sending on D3, receiving on D5
---------------------------------------------------------------------------------------------------- // 0 errors out of 100
End of test!
"1" or "0" indicates ERROR, depending on test state. "-" is good.
Switching cio pins 5s HIGH -> 5s LOW -> input
then DSP pins 5s HIGH -> 5s LOW -> input, repeating
Disconnect cables then reset chip when done!

Below also the data from the log
I don't like the quality of the signal from the CIO
What could be wrong ?
Is there somewhere to improve the soldering ?
If so where ?

2025-05-26 15:59:07UTC. SW:2024-10-07-1913
CIO-ESP:C0,1,FE,B7,FE,FB,FE,1,FF,E5,FF
DSP-ESP:1B,1B,0,0,0,0,0,0,0,0,0
ESP-CIO:1B,1B,0,0,0,0,0,0,0,0,0
ESP-DSP:C0,1,FE,B7,FE,FB,FE,1,FF,E5,FF
CIO msg count: 7 DSP msg count: 581
CIO msg quality: 14.000000% DSP msg quality: 100.000000%

Packet errors:3
bit0-bit error, bit1-too many bytes, bit2: too few bytes.

CIO CMD byte 0: 1
CIO CMD byte 1: FF
CIO CMD byte 2: E5
CIO CMD byte 3: FF
CIO CMD byte 4: 88
CIO CMD byte 5: 1
CIO CMD byte 6: 40
CIO CMD byte 7: C0
CIO CMD byte 8: 1
CIO CMD byte 9: FE
CIO CMD byte 10: F7
CIO CMD byte 11: FE
CIO CMD byte 12: FB
CIO CMD byte 13: FF
CIO CMD byte 14: 1
CIO CMD byte 15: FF
CIO CMD byte 16: F0
CIO CMD byte 17: FF
CIO CMD byte 18: 8C
CIO CMD byte 19: 1
CIO CMD byte 20: 40
CIO CMD byte 21: C0
CIO CMD byte 22: 1
CIO CMD byte 23: FE
CIO CMD byte 24: F7
CIO CMD byte 25: FE
CIO CMD byte 26: FF
CIO CMD byte 27: FE
CIO CMD byte 28: 1
CIO CMD byte 29: FF
CIO CMD byte 30: E1
CIO CMD byte 31: FF
CIO CMD byte 32: 88
CIO CMD byte 33: FE
CIO CMD byte 34: FD
CIO CMD byte 35: FF
CIO CMD byte 36: 80
CIO CMD byte 37: FF
CIO CMD byte 38: F0
CIO CMD byte 39: FF
CIO CMD byte 40: 88
CIO CMD byte 41: 0
CIO CMD byte 42: 40
CIO CMD byte 43: E0
CIO CMD byte 44: 1
CIO CMD byte 45: FE
CIO CMD byte 46: B7
CIO CMD byte 47: FE
CIO CMD byte 48: FB
CIO CMD byte 49: FE
CIO CMD byte 50: 1
CIO CMD byte 51: FF
CIO CMD byte 52: E5
CIO CMD byte 53: FF
CIO CMD byte 54: 88
CIO CMD byte 55: 1
CIO CMD byte 56: 40
CIO CMD byte 57: C0
CIO CMD byte 58: 1
CIO CMD byte 59: FE
CIO CMD byte 60: B7
CIO CMD byte 61: FE
CIO CMD byte 62: FB
CIO CMD byte 63: FE
2025-05-26 15:59:48UTC. SW:2024-10-07-1913
CIO-ESP:C0,1,FE,B7,FE,DB,FE,1,FF,E5,FF
DSP-ESP:1B,1B,0,0,0,0,0,0,0,0,0
ESP-CIO:1B,1B,0,0,0,0,0,0,0,0,0
ESP-DSP:C0,1,FE,B7,FE,DB,FE,1,FF,E5,FF
CIO msg count: 21 DSP msg count: 1018
CIO msg quality: 24.000000% DSP msg quality: 100.000000%

Packet errors:1
bit0-bit error, bit1-too many bytes, bit2: too few bytes.

CIO CMD byte 0: FE
CIO CMD byte 1: B7
CIO CMD byte 2: FE
CIO CMD byte 3: DB
CIO CMD byte 4: FE
CIO CMD byte 5: 1
CIO CMD byte 6: FF
CIO CMD byte 7: E5
CIO CMD byte 8: FF
CIO CMD byte 9: 88
CIO CMD byte 10: 1
CIO CMD byte 11: 60
CIO CMD byte 12: C0
CIO CMD byte 13: 1
CIO CMD byte 14: FE
CIO CMD byte 15: B7
CIO CMD byte 16: FE
CIO CMD byte 17: DB
CIO CMD byte 18: FE
CIO CMD byte 19: 1
CIO CMD byte 20: FF
CIO CMD byte 21: E5
CIO CMD byte 22: FF
CIO CMD byte 23: 8C
CIO CMD byte 24: 0
CIO CMD byte 25: 40
CIO CMD byte 26: C0
CIO CMD byte 27: 1
CIO CMD byte 28: FE
CIO CMD byte 29: B7
CIO CMD byte 30: FE
CIO CMD byte 31: DB
CIO CMD byte 32: FE
CIO CMD byte 33: 0
CIO CMD byte 34: FF
CIO CMD byte 35: E5
CIO CMD byte 36: FF
CIO CMD byte 37: 88
CIO CMD byte 38: 1
CIO CMD byte 39: 40
CIO CMD byte 40: C0
CIO CMD byte 41: 1
CIO CMD byte 42: FE
CIO CMD byte 43: B7
CIO CMD byte 44: FE
CIO CMD byte 45: DB
CIO CMD byte 46: FE
CIO CMD byte 47: 1
CIO CMD byte 48: FF
CIO CMD byte 49: E5
CIO CMD byte 50: FF
CIO CMD byte 51: 88
CIO CMD byte 52: FE
CIO CMD byte 53: DB
CIO CMD byte 54: FE
CIO CMD byte 55: 1
CIO CMD byte 56: FF
CIO CMD byte 57: E5
CIO CMD byte 58: FF
CIO CMD byte 59: 88
CIO CMD byte 60: 1
CIO CMD byte 61: 40
CIO CMD byte 62: C0
CIO CMD byte 63: 1
2025-05-26 15:59:52UTC. SW:2024-10-07-1913
CIO-ESP:C0,1,FE,B7,FE,FB,FE,1,FF,E5,FF
DSP-ESP:1B,1B,0,0,0,0,0,0,0,0,0
ESP-CIO:1B,1B,0,0,0,0,0,0,0,0,0
ESP-DSP:C0,1,FE,B7,FE,FB,FE,1,FF,E5,FF
CIO msg count: 22 DSP msg count: 1063
CIO msg quality: 24.000000% DSP msg quality: 100.000000%

Packet errors:1
bit0-bit error, bit1-too many bytes, bit2: too few bytes.

CIO CMD byte 0: FE
CIO CMD byte 1: C3
CIO CMD byte 2: FF
CIO CMD byte 3: 88
CIO CMD byte 4: 1
CIO CMD byte 5: 0
CIO CMD byte 6: C0
CIO CMD byte 7: 0
CIO CMD byte 8: FE
CIO CMD byte 9: B7
CIO CMD byte 10: FE
CIO CMD byte 11: DD
CIO CMD byte 12: FE
CIO CMD byte 13: 1
CIO CMD byte 14: FF
CIO CMD byte 15: E0
CIO CMD byte 16: FF
CIO CMD byte 17: 88
CIO CMD byte 18: 1
CIO CMD byte 19: 40
CIO CMD byte 20: C0
CIO CMD byte 21: 1
CIO CMD byte 22: FE
CIO CMD byte 23: B7
CIO CMD byte 24: FE
CIO CMD byte 25: FB
CIO CMD byte 26: FE
CIO CMD byte 27: 1
CIO CMD byte 28: FF
CIO CMD byte 29: E5
CIO CMD byte 30: FF
CIO CMD byte 31: 88
CIO CMD byte 32: FE
CIO CMD byte 33: D7
CIO CMD byte 34: FF
CIO CMD byte 35: DF
CIO CMD byte 36: FE
CIO CMD byte 37: 1
CIO CMD byte 38: FF
CIO CMD byte 39: E0
CIO CMD byte 40: FF
CIO CMD byte 41: C8
CIO CMD byte 42: 1
CIO CMD byte 43: 40
CIO CMD byte 44: C0
CIO CMD byte 45: 1
CIO CMD byte 46: FE
CIO CMD byte 47: B7
CIO CMD byte 48: FE
CIO CMD byte 49: DB
CIO CMD byte 50: FE
CIO CMD byte 51: 1
CIO CMD byte 52: FF
CIO CMD byte 53: E5
CIO CMD byte 54: 1
CIO CMD byte 55: 40
CIO CMD byte 56: C0
CIO CMD byte 57: 1
CIO CMD byte 58: FE
CIO CMD byte 59: 6F
CIO CMD byte 60: FD
CIO CMD byte 61: D7
CIO CMD byte 62: FF
CIO CMD byte 63: 3
2025-05-26 15:59:59UTC. SW:2024-10-07-1913
CIO-ESP:C0,1,FE,B7,FE,DB,FE,1,FF,E5,FF
DSP-ESP:1B,1B,0,0,0,0,0,0,0,0,0
ESP-CIO:1B,1B,0,0,0,0,0,0,0,0,0
ESP-DSP:C0,1,FE,B7,FE,DB,FE,1,FF,E5,FF
CIO msg count: 23 DSP msg count: 1131
CIO msg quality: 24.000000% DSP msg quality: 100.000000%

Packet errors:1
bit0-bit error, bit1-too many bytes, bit2: too few bytes.

CIO CMD byte 0: FE
CIO CMD byte 1: 81
CIO CMD byte 2: FF
CIO CMD byte 3: F2
CIO CMD byte 4: 80
CIO CMD byte 5: 1
CIO CMD byte 6: 40
CIO CMD byte 7: C0
CIO CMD byte 8: 1
CIO CMD byte 9: FE
CIO CMD byte 10: B7
CIO CMD byte 11: FE
CIO CMD byte 12: ED
CIO CMD byte 13: FF
CIO CMD byte 14: 80
CIO CMD byte 15: FF
CIO CMD byte 16: E5
CIO CMD byte 17: FF
CIO CMD byte 18: C8
CIO CMD byte 19: 1
CIO CMD byte 20: 40
CIO CMD byte 21: C0
CIO CMD byte 22: 1
CIO CMD byte 23: FE
CIO CMD byte 24: B7
CIO CMD byte 25: FE
CIO CMD byte 26: DB
CIO CMD byte 27: FE
CIO CMD byte 28: 1
CIO CMD byte 29: FF
CIO CMD byte 30: CF
CIO CMD byte 31: FF
CIO CMD byte 32: C8
CIO CMD byte 33: 1
CIO CMD byte 34: 0
CIO CMD byte 35: C0
CIO CMD byte 36: 1
CIO CMD byte 37: FE
CIO CMD byte 38: B7
CIO CMD byte 39: FE
CIO CMD byte 40: DB
CIO CMD byte 41: FE
CIO CMD byte 42: 1
CIO CMD byte 43: FF
CIO CMD byte 44: E5
CIO CMD byte 45: FF
CIO CMD byte 46: 80
CIO CMD byte 47: 1
CIO CMD byte 48: 40
CIO CMD byte 49: C0
CIO CMD byte 50: 1
CIO CMD byte 51: FE
CIO CMD byte 52: B7
CIO CMD byte 53: FE
CIO CMD byte 54: DB
CIO CMD byte 55: FE
CIO CMD byte 56: 1
CIO CMD byte 57: FF
CIO CMD byte 58: E5
CIO CMD byte 59: FF
CIO CMD byte 60: 88
CIO CMD byte 61: B7
CIO CMD byte 62: FE
CIO CMD byte 63: DB

[visualapproach]

CIO quality is low, but it only measures the received data. Maybe the CIO has a hard time getting the commands going the other way.
Are you using a level converter or bare bone ESP? You should use an LLC.