I have started having a thin black line along either one or the other border when using a green screen. I reduced GPU load down to 45% to see if I was asking too much of my computer, but no luck. I noticed it a few weeks ago. So far if I move the inserted key image left or right up or done, I can make the one or both of the lines become thinner, but always present. I first noticed it on one of my broadcast shows, where the line was on the left side the screen of a camera insert. It was probably along the bottom, but I had the insert low down on the target image. I'm really stuck here. I'm in over my head on this one. I only get this line behavior within vMix, and not during zoom or google hangouts using my screen.

Has anyone else experienced this and have a fix? It does not come and go.

During my recent tests, the CPU was at 4%-10% and GPU at 52%.
This is my music production computer retrofitted with a new GPU (see below) to get me thru the pandemic. Up until a month ago, I didn't seem to have this problem. I have probably upgraded.

vMix HD - 23.0.0.60 x64
Compaq Elite 8300 tower, Windows 10 Pro, Intel i7 4 Core, 16G Ram, AMD Radeon Pro WX 3100 4G - pushing 3 monitors (all HDMI outputs). I use my living room television (3rd monitor) as a confidence monitor, just to check what I'm sending out, since it's only me doing it all.


UPDATE - Temporary Remedy: I don't know if this is a bug, but I just found out, if I CROP the original source under input settings, main, (check the crop box), I can hide the lines (I have to have a green screen insert viewable), the problem is masked anywhere I overlay the original input. This behavior may have started after an update, but I didn't notice. See examples below.

Thanks,

Robert (examples below)
STILL PICS
https://drive.google.com...jJ2nY1V/view?usp=sharing

https://drive.google.com...jJ2nY1V/view?usp=sharing

https://drive.google.com...P0sc_EV/view?usp=sharing

Here the line is along the left behind me. As I mentioned it is also probably below, but our of frame.
https://drive.google.com...KIeynRE/view?usp=sharing

LIVE VIDEO
This is a broadcast without the line in my insert.


This is a broadcast WITH the line a month or so later. Look at the window (behind me at the lamp) left side vertical. Same camera, ram, GPU card, etc.