When submitting a bug report, please use the below template and thoroughly fill out the necessary information.

Date & Time: Since 28.06.2019
Frequency: Always
World name: Shiva
Character name: Riful Voras
Retainer name: NA
NPC name: NA
Monster name: NA
Class/Level: NA
Party or solo: NA
In-game time: Always
Area and coordinates: NA
Housing: NA

Steps:
1. Press ESC
2. Look for "Resolution Preset"
3. No 2560x1440 (144Hz) option available

Connection Specs
- Type of internet connection/provider: NA
- Modem maker/model number: NA

PC Specs

To obtain the system information, open the FFXIV launcher and select Config → System Information → Display.

-=-=-=-=- System Information -=-=-=-=-

SYSTEM_OS Windows 10 Pro 64-Bit-Version (6.2, Build 9200) (17134.rs4_release.180410-1804)
SYSTEM_CPU AMD Ryzen 7 2700X Eight-Core Processor (16 CPUs), ~3.7GHz
SYSTEM_CORE_NUM SYSTEM_CORE_LOGIC 16 SYSTEM_CORE_PHYSICS 8
SYSTEM_BIOS 4012
SYSTEM_LANGUAGE Deutsch (Gebietsschema: Deutsch)
SYSTEM_MEMORY 32699.594MB
SYSTEM_VIRTUAL_MEMORY 134217727.875MB
SYSTEM_PAGE_FILE 37563.594MB
SYSTEM_STORAGE C:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 232.332GB SYSTEM_FREEDISC_SPACE 158.159GB
SYSTEM_STORAGE D:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 1862.891GB SYSTEM_FREEDISC_SPACE 576.891GB
SYSTEM_STORAGE E:\ SYSTEM_NETWORK_DRIVE SYSTEM_TOTALDISC_SPACE 3572.568GB SYSTEM_FREEDISC_SPACE 3139.730GB
SYSTEM_DIRECTX_VERSION DirectX 12
SYSTEM_GRAPHICS NVIDIA GeForce GTX 1080 Ti
SYSTEM_GRAPHICS_DEVICE \\.\DISPLAY1
SYSTEM_GRAPHICS_CHIP GeForce GTX 1080 Ti
SYSTEM_GRAPHICS_MAKER NVIDIA
SYSTEM_GRAPHICS_VRAM 11127.000 MB
SYSTEM_GRAPHICS_SHARED_VRAM 16349.797 MB
SYSTEM_GRAPHICS_DAC Integrated RAMDAC
SYSTEM_GRAPHICS_DISPLAY_MODE 2560 x 1440 (32 bit) (144Hz)
SYSTEM_GRAPHICS_DRIVER C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_37ec54c19854e219\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_37ec54c19854e219\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_37ec54c19854e219\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_37ec54c19854e219\nvldumdx.dll
SYSTEM_GRAPHICS_DRIVER_VERSION 25.21.0014.2531
SYSTEM_GRAPHICS_DRIVER_DATE 4/9/2019 02:00:00
SYSTEM_GRAPHICS_DRIVER_LANGUAGE Englisch
3.0
SYSTEM_GRAPHICS_PIXEL_SHADER 3.0
SYSTEM_GRAPHICS_VERTEX_TEXTURE SYSTEM_SUPPORT
SYSTEM_SOUND Realtek Digital Output (Realtek High Definition Audio)
SYSTEM_SOUND_DEVICE_ID {9AEDF8EF-8532-4008-9A4A-4ACD2456E68E}
SYSTEM_SOUND_DEVICE_NAME RTKVHD64.sys
SYSTEM_SOUND_DRIVER_VERSION 6.00.0001.8158
SYSTEM_SOUND_DRIVER_LANGUAGE Englisch
SYSTEM_SOUND_DRIVER_DATE 5/16/2017 00:00:00
SYSTEM_SOUND Ausgang (Scarlett Solo)
SYSTEM_SOUND_DEVICE_ID {64BC3928-2EA9-490E-B628-157C3B80FA9B}
SYSTEM_SOUND_DEVICE_NAME {0.0.0.00000000}.{64bc3928-2ea9-490e-b628-157c3b80fa9b}
SYSTEM_SOUND_DRIVER_VERSION
SYSTEM_SOUND_DRIVER_LANGUAGE
SYSTEM_SOUND_DRIVER_DATE
SYSTEM_INPUT {6F1D2B60-D5A0-11CF-BFC7444553540000}
SYSTEM_INPUT_NAME Maus
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 3 SYSTEM_GAMEPAD_BUTTON 5 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {6F1D2B61-D5A0-11CF-BFC7444553540000}
SYSTEM_INPUT_NAME Tastatur
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 128 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {AF002820-890E-11E7-8001444553540000}
SYSTEM_INPUT_NAME Controller (Xbox One For Windows)
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 5 SYSTEM_GAMEPAD_BUTTON 10 SYSTEM_GAMEPAD_FOV 1
SYSTEM_INPUT {D4A84AF0-65F6-11E9-8007444553540000}
SYSTEM_INPUT_NAME VMulti HID
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {E7969870-65F5-11E9-8002444553540000}
SYSTEM_INPUT_NAME ROCCAT Vulcan AIMO
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 573 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {E7969870-65F5-11E9-8003444553540000}
SYSTEM_INPUT_NAME ROCCAT Vulcan AIMO
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 3 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {E796BF80-65F5-11E9-8004444553540000}
SYSTEM_INPUT_NAME ROCCAT Vulcan AIMO
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {E796E690-65F5-11E9-8005444553540000}
SYSTEM_INPUT_NAME ROCCAT Vulcan AIMO
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {99A90B60-638A-11E9-8001444553540000}
SYSTEM_INPUT_NAME ROCCAT Kone Aimo
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 573 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {99A98090-638A-11E9-8002444553540000}
SYSTEM_INPUT_NAME ROCCAT Kone Aimo
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 3 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {99A98090-638A-11E9-8003444553540000}
SYSTEM_INPUT_NAME ROCCAT Kone Aimo
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {99A9A7A0-638A-11E9-8004444553540000}
SYSTEM_INPUT_NAME ROCCAT Kone Aimo
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-


As one can see from:

SYSTEM_GRAPHICS_DISPLAY_MODE 2560 x 1440 (32 bit) (144Hz)

I run a 2560x1440 144Hz Display. Before the update to 5.0 I had the option to run my native 144Hz.
Now I can only select 85Hz and a maxium frame rate limit of 90.

My system can run FFXIV way faster than 90FPS most of the time. This update throws about 20% in performance out of the window for me.
144Hz is pretty common with PC gaming, bring it back.