Tested a new affordable mobile system for vMix 21.0.0.45 4K.

Acer Nitro V 15 BE VN7-593G-74FW
I7 7700 HQ
256 GB SSD+ 1000GB HDD
8 GB DDR4 RAM
GTX 1060 6GB
2x USB 3
1x Thunderbolt 3

Aktio Node Lite Thunderbolt 3 PCI Express Expansion Chassis
BM Decklink Duo 2
BM Decklink Minirecorder 4K

2x Elgato Camlink HDMI to USB 3

Elgato Streamdeck

Behringer UMC202 HD

The Nitro seems to have 2 USB 3 curcuits, so its posible to run the 2 Camlinks simultaneously.

Following configuarations were tested successfully:

vMix @ 1080 50p
- 2x Camlink @ 1080 50p
- 1x BM Minirecorder 4K with Akitio over Thunderbolt3
- Decklink for switching (shortcuts)
- UMC202HD Stereo

2 HD and 1 UHD input via HDMI, recording MP4 high profile @ 28mbit -hardware encoded.
6 virtual inputs from the 4k source, 2 native inputs from the Camlinks, 20 various inputs like lowerthirds, video, pictures...
Streaming to facebook @ 720 2,5mbits hardware encoded.
NDI not tested.
Testtime about 3 hours, rendertime never over 11ms, Cpu load 25-35 %...

vMix @ 1080 50p
- 2x Camlink @ 1080 50p
- 1x BM Decklink Duo 2 with Akitio over Thunderbolt3
- Decklink for switching (shortcuts)
- UMC202HD Stereo

2 HD via HDMI, 4 HD via SDI inputs @ 50p, recording MP4 high profile @ 28mbit -hardware encoded.
20 various inputs like lowerthirds, video, pictures...
Streaming to facebook @ 720 2,5mbits hardware encoded.
NDI not tested.
Testtime about 1 hour, rendertime never over 12ms, Cpu load 28-37 %...

At first tests this notebook tended to overheat, average temperatures of 98 degrees celsius were dedected bei Core Temp.
It seems that the manufactor used a cheap and unusable cool paste.
Repasting CPU/GPU and ligthly undervolt CPU gave me -15 degrees of CPU temperature and stable performance with vMix 4k.

Conclusion:
Easy transportable and stable System with 2HD+ 1 UHD or 6 HD inputs and extendable to 9 HD inputs with an additional switcher like Roland V1HD.
Great for me...:)