[电脑] 推荐个性价比高、接口全的采集卡可以么

USB3.0 延迟还可以的
https://www.youtube.com/watch?v=lr33MeTRSzM

油管上有测评，AVerMedia C127 C875 CV710 GC550，
conclusion : average latency = average result - U2711@average :
C127 : (109.746190-27.558264)ms = 82.187926ms
CV710 : (75.538767-27.558264)ms = 47.980502ms
GC550 : (79.243556-27.558264)ms = 51.685291ms

PCI-E的C127 延迟反而比较大