Hello Jan,
Thank you for replying, I understanding that it could get frustrating if the device is not working as expected.
As you have mentioned that you are using Epson Expression 312, you can download the latest drivers for the device from the link provided below.
Epson Expression 312 Drivers & Support
I would also request you to get in touch with Epson Support once and check if they are aware of this issue.
Looking forward to your reply.
Thank you.