Never had imagined Detroit being a swear word, tbh... The more you know... --- Post updated --- Not really looking forward to this change, tbh... My system is a laptop with an AMD Ryzen 5 and integrated Radeon graphics plus a 16GB RAM (don't know how much VRAM I have, though). I tested Vulcan a month ago and the system performance on WCUSA took a very deep dive, so I aborted it and that was my only time to have tested it. On the other hand, DirectX11 (or Direct3D11, as I see it on the top left corner of my screen) is good on mid graphics settings, with only the Mesh Quality and Shadows settings maxed out. So I really hope they've optimized Vulcan properly.
Your ram is your vram, it just gets shared across both your cpu and gpu. Since beamng is pretty ram intensive, i wouldn't be surprised if you ran out of ram/vram, and currently in Vulkan there's an issue where if the games wants to use more vram than required, performance drops a lot more than in dx11. This will get fixed before it's stable though, and then you should have a good performance improvement since amd systems tend to work well with vulkan
Does your laptop have socketed ram (or at least half of it is socketed?). It would be worth looking at whether you can increase your ram capacity, and then allocate more of the ram to be dedicated video memory. If I remember correctly, this can be done in AMD adrenalin when using integrated graphics.
I certainly knew it's a different terminology than the usual RAM, but didn't know it's not that much different. Thank you. Yep, the typical overdemand/bottleneck is what I assumed too in my experience with the Vulkan, since I come from a former potato system which even Direct X11 put a great strain on (it was a laptop with an integrated Nvidia GT620M and a 4GB RAM - that poor old thing would prepare food had it been able to, with the heat it produced). The devs know what they're doing but ok, we should see what it looks like in the upcoming update(s). --- Post updated --- I remember last year looking at laptop specs in a marketplace for buying my current laptop and some of them did have the ability to extend the RAM (from 16GB to 20GB, usually). I don't think mine has this ability, but again, I have to check to make sure.
A simple google search should suffice. It's well worth doing, as DDR4 SODIMM modules are cheap (providing your laptop does have a stick of socketed ram).
That's only the case for integrated gpus though, if you have a dedicated one they use fairly different ram technology and you can't increase its amount (sadly)
its been like the opposite for me in WCUSA career mode, I get like 15-20 fps on DX but then get 40-50 fps on Vulkan
I agree. I think they will release earlier in the week, in order to take the other days to work in eventual bugs and hotfixes.