I've actually been thinking about this lately.

The way I understand Resizable BAR, it has no effect if your GPU is less than 100%, because it just allows you to go beyond the number that calculates the 100%.

High Input Performance Mode seems to have benefits before hitting that point.

@ kmedia

You never want to have both "High Input Performance Mode" and Resizable BAR working together as they do similar things (but differently) which can cause performance issues for vMix if they happen to conflict with each other in some instances:
https://www.vmix.com/kno...th-resizable-bar-support

"High Input Performance Mode" is for systems that do not support Resizable BAR.
My understanding is that it essentially swaps Inputs in and out as required from the 256 MB of cache memory on NVIDIA GPUs to assist the storage of "overflow" data when you have a lot of Inputs to insure they are available for instant access.
That is the GPU Mem statistic being measured in vMix, so it is basically good up to 99%, but once it is full, there is no more storage space and you will start to have performance issues in vMix:
https://www.vmix.com/kno...n-in-the-vmix-status-bar


Resizable BAR does a similar thing but uses more of the actual Video Memory on the GPU for caching and since there is no way for vMix to measure or track its usage, the 100% GPU Mem statistic becomes meaningless.


Ice

@Hypohamish You're right, I shouldn't have even mentioned the GPU stat since it doesn't matter with rebar. I'm just trying to figure out why everything is running so much better now that I've broken this rule and activated both Resizable BAR and High Input Performance Mode. I've now run 4 live shows this way, each over 90 minutes, and I've only seen vMix running faster and more reliably than ever before.

Could this be because I'm using vMix in a slightly unusual way? I have lots of stingers, video packages, ads (in Lists), Zoom callers, and titles, but only 1 actual camera input (since the talent is all remote with their cameras coming in via vMix Call).

I'm curious if anyone else has tried this and seen similar improvements.

Personally i have seen the "gpu overload message" even if the gpu memory is not 100%. In the other side im using vmix also for 24/7 playout i have seen (without the high input enabled because i had a gpu with 2gb memory so i didnt enable this setting) to be 100% after i insert many videos in vmix that were played in auto way from vscheduler and everything was ok,even if the memory was 100% and beyond these videos,vscheduler also loaded the per hour ads (1 by 1-->that way vscheduler work) and everything were going perfect. But other time if i do many virtualset angles (with quadro p4000 that i have now and high input enabled) even if the gpu memory is not at 100% i may have "gpu overload" message or see high render times,that warn me to remove things,before it goes booom..Dont know if resizeable bar really helps in these scenarios
Also i see that everything we add in Vmix it consumes vram. Except the gpu memory percentage into vmix, we can see in windows task manager on the gpu section,that everytime we add something in vmix,the dedicated gpu memory raises up. For example i see that if we insert a 4k virtualset then the gpu memory in task manager will go up 500-700mb. Videos depend on their resolution also raise up the gpu memory.
So if we need to see the actual gpu memory vmix uses and if there exist spare memory,i believe the task manager says the truth and not the percentage.
So all this is somehow more complicated than the how much percentage the icon says. That`s my opinion