I’m seeing the same thing.
I’m booting from a USB stick from a Windows PC with an NVIDIA RTX 3070 Ti connected over DP1 & DP2.
This worked fine with v34. Doesn’t work with v35, either with a clean install or the updated USB install that used to work.
I’ve tried all of the combinations of nvidia settings in the batocera-boot.cfg that I can think of.
I’m pretty sure it’s still booting; it’s just not outputting video once it gets past the splash screen.
Any suggestions (other than roll back to v34 by remoting to the machine, which I could do but I’d rather just get it working).