My bet is something differs on the 2 machines. Those Intel solutions can have differences in the BIOS where memory is allocated to the video, the driver can vary and then we have OS updates that well, you have a big pile to figure out why one but not the other works.
From notebookcheck I read this: "Performance
The exact performance of the HD Graphics 520 depends on various factors like L3 cache size, memory configuration (DDR3/DDR4) and maximum clock rate of the specific model. "
The cost of figuring this out may exceed getting a laptop that meets your software's requirements.
In parting, LONG AGO, I found that in a rare Intel HD graphics system, changing the Windows background to none fixed an oddball like this one. Drove them crazy that I couldn't answer why. My guess is it freed up a little more this or that.
Another reason why I don't push my luck when it comes to things like this.
We have a situation where we are using a Dell Inspiron 5759 Laptop as a Monitoring/ Client workstation using a DVTel Horizon 7.0 LNVR.
One of three identical laptops has been commisioned on a system with 17 Cameras and is working perfectly - no problems to speak of as yet.
The other two are now failing to pull up the CCTV footage in the Control Center application on a separate site with 26 Cameras.
We know that the network is good as our personal computers are able to pull up the footage instantly using the same port and IP details.
DVTel Tech support have told us that our graphics card is not up to the minimum system requirements to render the footage at speed.
If anyone could provide me with some sort of insight as to how our system is fully functioning on one site and not on the second, then please do!
Thanks in advance