@adrian1976
Thanks for having uploaded and attached the BIOS file.
Here are the results of my check:
- It is an AMI UEFI BIOS. Advantage for you: You can get full NVMe support by following my above linked Guide.
- It is easy to get the NvmExpressDxe_5.ffs module inserted by using the MMTool 4.50.0023 (I have tried it successfully without any Pad-file problem).
The problem may be to get the modded BIOS properly flashed into your Acer mainboard chip. I cannot help you regarding this task, but you may find some useful information within the start post of >this< thread.
Good luck!