The platform is Steam, when the issue occurs seems to be entirely random. Once it occurs once, it tends to keep occurring every 5-10 minutes, and it seems that fully turning off and restarting my PC is the only way to stop this.

I've tried only running Discord alongside FFXIV (no in-game overlay), and it seems to have no impact.
I only play this character, so I can't comment on if it occurs on multiple.
When running Core Temp to keep an eye on my processor temperatures, the freezing seems to either have no effect, or they actually get cooler during the freeze.
I had updated my drivers to the most recent version a day or two after Dawntrail's early access launched (as well as clean installing it), and it had no effect on the issues.
The issue happens in both borderless and fullscreen mode, I do not play in windowed mode.

Hopefully this info from the system report is enough:
-=-=-=-=-=-=- System Information -=-=-=-=-=-=-

SYSTEM_OS Windows 10 Home 64-bit (6.2, Build 9200) (19041.vb_release.191206-1406)
SYSTEM_CPU Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz (8 CPUs), ~3.6GHz
SYSTEM_CORE_NUM SYSTEM_CORE_LOGIC 8 SYSTEM_CORE_PHYSICS 8
SYSTEM_BIOS 2804
SYSTEM_LANGUAGE English (Regional Setting: English)
SYSTEM_MEMORY 32682.906MB
SYSTEM_VIRTUAL_MEMORY 134217727.875MB
SYSTEM_PAGE_FILE 37546.906MB
SYSTEM_STORAGE C:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 465.152GB SYSTEM_FREEDISC_SPACE 34.644GB
SYSTEM_STORAGE D:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 931.496GB SYSTEM_FREEDISC_SPACE 569.043GB
SYSTEM_DIRECTX_VERSION DirectX 12
SYSTEM_GRAPHICS NVIDIA GeForce RTX 2070 SUPER
SYSTEM_GRAPHICS_DEVICE \\.\DISPLAY1
SYSTEM_GRAPHICS_CHIP NVIDIA GeForce RTX 2070 SUPER
SYSTEM_GRAPHICS_MAKER NVIDIA
SYSTEM_GRAPHICS_VRAM 7989.000 MB
SYSTEM_GRAPHICS_SHARED_VRAM 16341.453 MB
SYSTEM_GRAPHICS_DAC Integrated RAMDAC
SYSTEM_GRAPHICS_DISPLAY_MODE 1920 x 1080 (32 bit) (60Hz)
SYSTEM_GRAPHICS_DRIVER C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_5714f0dca6485379\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_5714f0dca6485379\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_5714f0dca6485379\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_5714f0dca6485379\nvldumdx.dll
SYSTEM_GRAPHICS_DRIVER_VERSION 32.00.0015.5612
SYSTEM_GRAPHICS_DRIVER_DATE 6/24/2024 20:00:00
SYSTEM_GRAPHICS_DRIVER_LANGUAGE English
3.0
SYSTEM_GRAPHICS_PIXEL_SHADER 3.0
SYSTEM_GRAPHICS_VERTEX_TEXTURE SYSTEM_SUPPORT
SYSTEM_SOUND Realtek Digital Output (Realtek(R) Audio)
SYSTEM_SOUND_DEVICE_ID {F50F7696-4F18-4426-96BC-8A714CD01A77}
SYSTEM_SOUND_DEVICE_NAME RTKVHD64.sys
SYSTEM_SOUND_DRIVER_VERSION 6.0.1.8496
SYSTEM_SOUND_DRIVER_LANGUAGE English
SYSTEM_SOUND_DRIVER_DATE 7/23/2018 20:00:00
SYSTEM_SOUND Speakers (Realtek(R) Audio)
SYSTEM_SOUND_DEVICE_ID {2E2A24E5-ACBF-4939-A84E-B180923058BC}
SYSTEM_SOUND_DEVICE_NAME RTKVHD64.sys
SYSTEM_SOUND_DRIVER_VERSION 6.0.1.8496
SYSTEM_SOUND_DRIVER_LANGUAGE English
SYSTEM_SOUND_DRIVER_DATE 7/23/2018 20:00:00
SYSTEM_INPUT {6F1D2B60-D5A0-11CF-BFC7444553540000}
SYSTEM_INPUT_NAME Mouse
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 3 SYSTEM_GAMEPAD_BUTTON 8 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {6F1D2B61-D5A0-11CF-BFC7444553540000}
SYSTEM_INPUT_NAME Keyboard
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 128 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {59408530-E944-11EA-8001444553540000}
SYSTEM_INPUT_NAME Gaming Mouse G502
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 652 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {5942F630-E944-11EA-8005444553540000}
SYSTEM_INPUT_NAME Corsair Gaming K55 RGB Keyboard
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {5942F630-E944-11EA-8002444553540000}
SYSTEM_INPUT_NAME Gaming Mouse G502
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 3 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {5942F630-E944-11EA-8003444553540000}
SYSTEM_INPUT_NAME Gaming Mouse G502
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {5942F630-E944-11EA-8004444553540000}
SYSTEM_INPUT_NAME Gaming Mouse G502
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {C325A740-1A98-11EE-8001444553540000}
SYSTEM_INPUT_NAME CST135XLU
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {5942F630-E944-11EA-8006444553540000}
SYSTEM_INPUT_NAME Corsair Gaming K55 RGB Keyboard
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 4096 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {5942F630-E944-11EA-8007444553540000}
SYSTEM_INPUT_NAME Corsair Gaming K55 RGB Keyboard
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {5942F630-E944-11EA-8008444553540000}
SYSTEM_INPUT_NAME Corsair Gaming K55 RGB Keyboard
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0