Hi, to increase the frame buffer size of the iGPU please access in the UEFI BIOS:
go to ADVANCED → AMB CBS → NBIO Common Options → GFX Configuration and set:
- iGPU Configuration to [UMA_SPECIFIED]
- UMA Frame Buffer Size to 1G or 2G, 4G, 8G (size of GPU RAM you want)
With 32GB of system RAM the maximum GPU memory is 16GB on my systems (I have two RZBOX, one 4900H and one 5800H).