Yes. Yes it is. Vega 64 average performance about the same as a 1080Ti in this game at this time. It just is.
Vega 64 is still well behind the GTX 1080 Ti from that YouTube video I posted above, and that was with asynchronous compute disabled for the GTX 1080 Ti. To be honest, this game's performance optimization will occur over a long period of time just like Doom.
When Doom's Vulkan patch first debuted, Fury X picked up a massive performance gain, almost enough to reach the GTX 1080. Later on though, subsequent patches and driver updates boosted NVidia's performance in the game substantially and the gap between the GTX 1080 and the Fury X became wider.
Roughly at least. I can't see any direct comparisons but we can deduce that Vega 64 is easily averaging within 10% with the current patch. Heck, since nV products have lost a little performance with the most recent patch I would bet Vega 64 is within a couple of percent.
The performance loss can be explained by the disabling of asynchronous compute. Also, NVidia optimizations will eventually be implemented in the game as well. It will just take longer to manifest.
Other things can make up ~30% performance, like this game engine...
Do you honestly think this game engine will be representative of the large majority of other 3D engines on the market? If so, I have an igloo to sell you somewhere in the Sahara desert.
AMD
PAID to have these optimizations implemented. So unless AMD has enough wealth to convince all the other major 3D engine developers to implement these changes, I don't see it happening across the board.
And if a game engine can make Vega 64 over 25% faster than a 1080, then how can you deny the possibility a different game engine and/or drivers can make it 30% faster? It doesn't need much (if any) more performance to match a 1080Ti (in this situation), and we've already agreed in theory about fine wine. So it seems you're sticking your head in the sand to me.
Um, we're talking about averages here. As magnificent as Id Tech 6.5 is, it's a proprietary tech that won't be adopted by other developers outside of Bethesda. Also, as I've said repeatedly, this game's optimization is not finished. NVidia's turn will come in this game, and performance will increase much like it did with Doom.
Obviously this is the best case we have for Vega at the moment, but why do I have to bother correcting people who insist Vega will never match a 1080Ti in gaming performance??
Vega is using shader intrinsics, 16 bit floats and probably some other architectural optimizations yet it still cannot close the gap completely on the GTX 1080 Ti. So if this is the best case scenario, it doesn't look so good for Vega matching the GTX 1080 Ti across the board in the future.