Is my GPU melting?

Hello,

I've had this issue ocassionally rear its ugly head again and again for at least a year and wondering if it's corrupted VRAM on my graphics card or something bad like that?

https://photos.app.goo.gl/vAW3fMrxLP1QSM2CA

Please let me know if you have any ideas what it could be!

Also, this footage stutters inside Premiere, jumping back and forward frames every second in a time glitch. But plays fine in Windows in all the media players I've tried.

MediaInfo tells me this about the files:

Format: MPEG-4
Format profile: Base Media / Version 2
Codec ID: mp42 (mp42/mp41)
File size: 308 MiB
. Duration: 8 min 11 s
Overall bit rate mode: Variable
Overall bit rate: 5 257 kb/s
Frame rate: 25.000 FPS
Encoded date: 2011-05-20 11:39:48 UTC
.Tagged date: 2011-05-20 11:39:48 UTC

.. ID: 1
Format: AVC
Format/Info: Advanced Video Codec
Format profile: Main@L3.2
Format settings: CABAC / 3 Ref Frames
.Format settings, CABAC: Yes
Format settings, Reference frames: 3 frames

Codec ID: avc1
Codec ID/Info: Advanced Video Coding
Duration: 8 min 11 s
Bit rate: 5 064 kb/s
Width: 1 280 pixels
Height: 720 pixels
.Display aspect ratio: 16:9
Frame rate mode: Constant
Frame rate: 25.000 FPS
Standard: PAL
Color space: YUV
hroma subsampling: 4:2:0

Bit depth: 8 bits
Scan type: Progressive
.Bits/(Pixel*Frame): 0.220
Stream size: 297 MiB (96%)
Writing library: AVC Coding
.Language: English
Encoded date: 2011-05-20 11:39:48 UTC
. Tagged date: 2011-05-20 11:39:48 UTC
Color range: Limited
Codec configuration box: avcC