Hey guys, thanks for taking the time to read my post.

I had a question about how vMix handles number of inputs. For my purposes, let's say I have 5 camera sources, 4 NDI sources, and a few media inputs/videos to playback. I have a 3700X, 32GB of RAM, and a GTX 2060.

Supposedly vMix can handle up to 1000 inputs... I am going to build out "cues" for a theatrical show we are doing where there are multiple cameras/NDI feeds in various arrangements on the screen (in order to keep actors distanced). By the time this is done, there will be around 200 "inputs" that are really just multiview re-arrangements of my actual sources (the cameras, NDI, and a few videos & graphics).
I'll be using a Stream Deck with shortcuts to move between each input, probably in order (unless two cues have the same re-arrangement, and then I'll have it map back to the first then forward again to the next in line). Can my system actually handle that? I just wanted to check that vMix is not trying to real time render every single "input" at the same time. I need to be able to switch between them smoothly without any lag, but I can't help but think if the PC is trying to render all the thumbnails of all ~200 "inputs" (each with multiple cameras in each one) that would be a disaster.

Can vMix handle that? Will I be able to switch between them without issues?

Hmmm, so you're not sure it will work? I have no idea how else I should be putting something like this together. I don't know if anybody has ever done anything like this with vMix. I've seen it done in online shows but I'm not what sort of systems they run/how they process all of it. According to the reference systems what I have should definitely handle all of the sources - I just don't know if it can handle all the "inputs" even if they're using the sources again. I feel like there should be a way where it doesn't need to render the thumbnail for every single "input" unless it's on the screen or in preview. I'll be switching everything to preview probably at least a few seconds before switching it to program, so if there's a way to disable live thumbnails that might fix the potential issue.

Alright! I'll have to experiment and see how it goes. I'll see if I can purchase some initial equipment to test with using the free trial version at home and go from there. Thank you!