Atem Mini ISO continually crashes w/ 3 cams, fine with 2

Hello, I have been trying to get this to work for ages to no avail. If anybody has ideas PLEASE help.

We have a 3 cam setup for video podcast recording where we need ISO files. When there are 3 cams, Atem will ISO record for 10-20 minutes and crash. We recently replaced HDMI cables with high end fiber optic, two 10 foot, one 15 foot with a signal booster. The 15 foot with signal booster works fine when only 2 cams attached.

Cameras are 3 Sony ZV E10s outputting 1080p at 24fps. ATEM set to 24 fps. Hard drive is a 1tb OWC envoy pro electron formatted exfat with original usb cable. Tried different high speed cables and same result...

I am at a loss for what this issue could be. I have tested every possible configuration. Even different power outlets/power strips. Is there anything I am missing here?

Thank you!

Try different hard drive

I am quit sure it is the connected ssd that is the problem. If it is a sandisk extreme portable then it could have been working well for a long time but now going wrong. Read the articles about all sandisk ssd drives of this model and shape have soldering issues causing hardware to fail in the long run.
Actually there are not that many options that work really well and give you enough recording time.
I recently build my own ssd using the Sabrent M.2SSD EC-SNVE usb-type C enclosure with a samsung 2TB 980RPO pcie4.0 NVME M.2 SSD I can say because I have tested it extensively that this works for the atem mini pro iso 50frps highest bitrate with 4 camera's connected and a lot of movement all of the in frames. It also works with the atem mini extreme iso with 8 camera's in 50frps hyperdeck high setting (so actually 9 full quality recordings simultaneous). BlackMagic should update the list of possible SSD that can work with the full use of the ISO all camera recording possibilities but then again that requires a lot of time. Maybe better if more people who actually use the iso recordings to their max limits tell here what ssd they use. Watch this Doug video. It is 1 year old now but it still makes a lot of sense and shows the setup I created after seeing this video. I have to add that at the time of creation there was no news about the failing of the sandisk ssd drives so Doug does recommend that one also in this video but you better not risk that one..

Or a quick look at my 8 camera atem recording setup here: