For how great AMD usually is on Linux, it's not without it's issues. RDNA2 (the entire RX 6000 series) still suffers to this day from this 2 years old issue that can cause stutter in games as the GPU constantly downclocks itself aggressively. I still prefer it over Nvidia (having owned one and now using AMD) but just be aware, it's not all as perfect as some Linux users would have you believe.