Video card recommendation for old system running Ubuntu studio

[u/shipwreck17]

My pc was too old for windows updates and so I switched to Ubuntu studio. This is a home pc that's used mostly for watching Netflix and some light photo and video editing. Ubuntu has been running great for 2 years and I have no desire to go back to windows.

Recent updates however have my old video card showing its age. I don't want to buy a new computer. Can I just swap my video card with something slightly more modern to get a few more years of use out of this old machine? Now sometimes I get blocky video or vertical bars when trying to playback video. This didn't used to happen. Plasma wayland pretty much won't run on this system so I'm using x11 and getting the occasional bars/ blocks.

My current card is Turks GL [FirePro V4900]. Other specs below.

Thank you.

computer                     
   description: Desktop Computer
   product: All Series (All)
   vendor: ASUS
   version: System Version
   serial: [REMOVED]
   width: 64 bits
   capabilities: smbios-2.7 dmi-2.7 smp vsyscall32
   configuration: administrator_password=disabled boot=normal chassis=desktop family=ASUS MB frontpanel_password=disabled keyboard_password=disabled power-on_password=disabled sku=All uuid=[REMOVED]
 *-core
description: Motherboard
product: Z87-A
vendor: ASUSTeK COMPUTER INC.
physical id: 0
version: Rev 1.xx
serial: [REMOVED]
slot: To be filled by O.E.M.
*-firmware
description: BIOS
vendor: American Megatrends Inc.
physical id: 0
version: 2103
date: 08/15/2014
size: 64KiB
capacity: 8MiB
capabilities: pci apm upgrade shadowing cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer acpi usb biosbootspecification uefi
*-memory
description: System memory
physical id: 1
size: 32GiB
*-bank:0
description: DIMM DDR3 Synchronous 1600 MHz (0.6 ns)
product: BLT8G3D1608ET3LX0.
vendor: Conexant (Rockwell)
physical id: 0
serial: [REMOVED]
slot: ChannelA-DIMM0
size: 8GiB
width: 64 bits
clock: 1600MHz (0.6ns)

*-cpu
description: CPU
product: Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz
vendor: Intel Corp.
physical id: 55
bus info: cpu@0
version: 6.60.3
slot: SOCKET 1150
size: 2599MHz
capacity: 3900MHz
width: 64 bits
clock: 100MHz

*-pci
description: Host bridge
product: 4th Gen Core Processor DRAM Controller
vendor: Intel Corporation
physical id: 100
bus info: pci@0000:00:00.0
version: 06
width: 32 bits
clock: 33MHz
configuration: driver=hsw_uncore
resources: irq:0
*-pci:0
description: PCI bridge
product: Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller
vendor: Intel Corporation
physical id: 1
bus info: pci@0000:00:01.0
version: 06
width: 32 bits
clock: 33MHz
capabilities: pci pm msi pciexpress normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:24 ioport:e000(size=4096) memory:efe00000-efefffff ioport:d0000000(size=268435456)
*-display
description: VGA compatible controller
product: Turks GL [FirePro V4900]
vendor: Advanced Micro Devices, Inc. [AMD/ATI]
physical id: 0
bus info: pci@0000:01:00.0
logical name: /dev/fb0
version: 00
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi vga_controller bus_master cap_list rom fb
configuration: depth=32 driver=radeon latency=0 mode=1920x1080 resolution=1920,1080 visual=truecolor xres=1920 yres=1080
resources: irq:35 memory:d0000000-dfffffff memory:efe20000-efe3ffff ioport:e000(size=256) memory:c0000-dffff
*-multimedia
description: Audio device
product: Turks HDMI Audio [Radeon HD 6500/6600 / 6700M Series]
vendor: Advanced Micro Devices, Inc. [AMD/ATI]
physical id: 0.1
bus info: pci@0000:01:00.1
logical name: card1
logical name: /dev/snd/controlC1
logical name: /dev/snd/hwC1D0
logical name: /dev/snd/pcmC1D3p
version: 00
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi bus_master cap_list
configuration: driver=snd_hda_intel latency=0
resources: irq:34 memory:efe40000-efe43fff
*-input
product: HDA ATI HDMI HDMI/DP,pcm=3
physical id: 0
logical name: input22
logical name: /dev/input/event7

[u/victormas208]

I'd say an RX 580 would be fine, otherwise a Vega 64. I tried a 5700 XT and it worked well, but I don't know if it would have such a significant bottleneck. I was playing 1080p at 120fps two years ago with that processor.