Audio on a second HDMI port?

  • My Intel based HTPC (Gigabyte H370I) has a HDMI 2.0 port and a HDMI 1.4 port. My Pre/Pro (Marantz) only supports HDMI 1.4. This has been OK but I'm now looking at picking up a 4K OLED. I'd like to avoid buying a new Pre/Pro.

    So I was thinking of connecting the OLED directly to the HTPC 4K port and connecting the Pre/Pro to the HDMI 1.4 port. Will Libreelec allow this? Would there be any sync issues? I'm not using CEC (have wifi remote for control).