I shot some footage over the weekend with a Panasonic AG-CX350 camera. The codec I used was 4K 150MB/s 10bit HEVC Long GOP .MOV 29.97 fps

The footage will not play correctly in the timeline, I am getting 1 FPS for the video and the audio playback is fine

I tried switching to the legacy HEVC playback and that did not help much (similar fps)

The footage is on a SSD (Nvme) that plays back at about 1400 MB/s --I used a drive speed test to confirm

Things I did to try to troubleshoot

Re-installed Vegas

Installed latest Nvidia Studio driver

Reset Vegas settings (Holding shift/control on startup)

I have an Alienware with a AMD Ryzen 3900 with 32GB of RAM and a RTX 2080 Super GPU

I tried playing it in Adobe Premiere on the same system and it plays perfectly fine in there

Here is a sample of the footage I am having the issue with

https://www.dropbox.com/t/RI8liAIZzcUi49up

Video
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main 10@L5.1@High
Codec ID                                 : hvc1
Codec ID/Info                            : High Efficiency Video Coding
Duration                                 : 1 min 23 s
Bit rate                                 : 144 Mb/s
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 29.970 (30000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 10 bits
Bits/(Pixel*Frame)                       : 0.580
Stream size                              : 1.40 GiB (97%)
Language                                 : English
Encoded date                             : UTC 2021-07-24 14:04:16
Tagged date                              : UTC 2021-07-24 14:04:16
Color range                              : Limited
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709
Codec configuration box                  : hvcC
 

Format                                   : MPEG-4
Format profile                           : QuickTime
Codec ID                                 : qt   2011.07 (qt  /pana)
File size                                : 1.45 GiB
Duration                                 : 1 min 23 s
Overall bit rate                         : 149 Mb/s

Is anyone else experiencing the same issue or have any ideas on how to fix the problem?

I submitted a ticket but the last time I did that about another issue recently I did not get a response back so I figured I would ask here for some advice.

Cheers

Rich