渣顯卡就只是讓無內顯的主機可以輸出畫面
跑遊戲請先去查最低配備需求

我查了一下你所說的Citra模擬器，要求最低支援OpenGL 3.3
https://citra-emu.org/wiki/faq/

What kind of specification do I need to run Citra?
The only hard requirements for the official version of Citra is a graphics chip that supports at least OpenGL 3.3 and a 64-bit OS running on a standard PC, but you definitely want a processor with the highest possible performance per core.

而你購買的HD4670只支援OpenGL 2.1

G1840的內顯則支援OpenGL 4.3
https://ark.intel.com/zh-tw/product...Cache-2-80-GHz-

你等於是買了一張DX7顯卡要跑DX11遊戲
當然硬體開不動只能軟體模擬，速度當然就搞笑了