Well, the RX580 is nearly 7 years old, so there's a possibility it may not be up to the task. That said, what drivers (exactly) are you running? According to the Adobe Fresco System Requirements Page, you should have:
raphics processor
Intel, Nvidia, or AMD* GPU with Direct X Feature Level 12.1.
* AMD GPU driver Radeon Software Adrenalin 2020 Edition 20.7.1, Driver Version 20.20.01.08 (Windows Driver Store Version 27.20.2001.8002) and newer is required. Visit https://www.amd.com/en/support to download.
So, what exactly are you running? If you have followed the above instructions, and it still isn't working, it may be your older card isn't quite up to the demands of the newer software.
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