F1 TV Premium is our new Ultimate Live Immersion subscription tier. Get a team principals view with up to 4 Live feeds on Multiview. Stream live in 4K UHD and on multiple devices.
Premium subscribers also get access to all features available on F1 TV Access and F1 TV Pro.
The 4 feeds is F1s own multiview system, and they mention the top subscription allows up to 6 devices. So even if they count multiple streams on your PC as separate devices, it should allow 6 streams of F1s 4 feed multiview.
Now this would be an absolute mess for multiviewer and a pain to set up manually, but my understanding is it will still allow you to stream all the views