Doubt it will play on the Steam Deck at all.
According to the Steam page for Guild Wars 3: System Requirements Minimum: OS: Windows 10 64-bit Processor: Intel Core i5-8400 or AMD Ryzen 5 2600 Memory: 16 GB RAM Graphics: RTX 2060 / Radeon RX 5700 / Intel Arc A580 Storage: 65 GB available space













Im assuming it will be higher later. Which makes me worried about if GW3 could be a flop. Asking for such high specs for such a normally PC centric game during a RAM/GPU/etc price crunch could kill it before it has a chance.