Audio and video gets desynced

[FurkanGozukara]

The desynch is small but it is noticeable when you pay attention to the mouth movements and so annoying

What could be reason?

auto-editor a.mkv --my-ffmpeg --no-open --edit audio:threshold=0.04 -c:v hevc_nvenc --extras "-preset ultrafast -crf 12 -threads 32" --video-bitrate {bitrate} --show-ffmpeg-commands

media info

General
Unique ID                      : 212542806416823081194025517233180951016 (0x9FE6416AB0E74C251A3DD26534CEC1E8)
Complete name                  : C:\sana tutorial\d.mkv
Format                         : Matroska
Format version                 : Version 4
File size                      : 4.50 GiB
Duration                       : 45 min 33 s
Overall bit rate               : 14.1 Mb/s
Frame rate                     : 60.000 FPS
Writing application            : Lavf61.8.100
Writing library                : Lavf61.8.100
ErrorDetectionType             : Per level 1

Video
ID                             : 1
Format                         : HEVC
Format/Info                    : High Efficiency Video Coding
Format profile                 : Main@L5.1@High
Codec ID                       : V_MPEGH/ISO/HEVC
Duration                       : 45 min 33 s
Width                          : 3 840 pixels
Height                         : 2 160 pixels
Display aspect ratio           : 16:9
Frame rate mode                : Constant
Frame rate                     : 60.000 FPS
Color space                    : YUV
Chroma subsampling             : 4:2:0
Bit depth                      : 8 bits
Default                        : No
Forced                         : No
Color range                    : Limited
Color primaries                : BT.709
Transfer characteristics       : BT.709
Matrix coefficients            : BT.709

Audio
ID                             : 2
Format                         : AAC LC
Format/Info                    : Advanced Audio Codec Low Complexity
Codec ID                       : A_AAC-2
Duration                       : 45 min 33 s
Channel(s)                     : 2 channels
Channel layout                 : L R
Sampling rate                  : 48.0 kHz
Frame rate                     : 46.875 FPS (1024 SPF)
Compression mode               : Lossy
Title                          : Track1
Default                        : No
Forced                         : No