Does the game have to load lots of stuff into the RAM when disembarking from your ship to a planet? That might be a factor, as I only have 16 gigs of RAM, and 6 of that are shared VRAM.
Shared VRAM is just plain disaster for the kind of game engine ED uses unfortunately. I'm mildly surprised Odyssey works at all...
The bottleneck is definitely RAM performance, because the game expects VRAM. That is somewhat mitigated by the fact the Go has DDR5 RAM but it still ain't VRAM, so even on raw speed, you're down, before you consider how much memory is available.
Since Ascendancy, the game is not completely comfortable on a 16GB system which ALSO has 6GB VRAM out on the GPU so yes, memory management will be the bottleneck.
so r u running a GTX4090 like gfn are too?
OP already mentioned they are using a Lenovo Legion Go. That has a mobile-focused GPU
with no dedicated VRAM
The GPU itself is an AMD Radeon 780M, which benchmarks nearly ten times worse than a GTX4090.
Nonetheless I‘ve got the impression that there is another issue of my individual setup regarding the planet disembarkings. My device is a Legion Go BTW, maybe someone is using that too and is observing the same behavior?
Yep, rendering planets is very memory hungry
and it depends on best of breed modern CPU<->GPU comms. Since your memory is completely off the pace and it's on a weird architecture there's no good way of making that happen.
The good news is there are lots of configurables in the graphics options and some of them are there specifically to deal with this problem so you could try turning down a lot of the planet-specific stuff to help.
By default it does a lot of preload type stuff to help performance but on your system it'll drown it before it's even started, hence the unusually long time for that phase to happen. You can turn the wick down on all of that in the options which will then make it render more as it goes long; which will mean you'll get some load-in when it has to do that, and also means you'll get lower FPS because it's spending time rendering on-demand instead of using pre-rendered stuff, but it'll probably be
smoother.
Finally, seems your 780M benches a little bit worse than even my ancient 1060 so I doubt you'll get much better than FPS in the 20s on a planet surface unless you turn everything down to Lego mode. If you do get a decent FPS let me know what settings you used...
I'm not saying the Go is necessarily "bad" it's just unfortunately there are some very specific things it will never be good at and they are the
exact things ED depends on most, even though other games on there will probably fly.
ETA: Specifically, Ascendancy really increased the impact on memory, both total use of it and how often data goes backwards and forwards and around.