I’ve been running beta 3 of X-Plane 11, deciding to wait on updating based on reports about betas 4 and 5. Beta 6 came out last night, and based on initial reports I decided to go ahead with the update. Initial impressions are that things only get better under Vulkan. Performance that yesterday was 27-30 FPS in the home cockpit with HDR, 4xAA+FXAA, and one below max objects today was 40 FPS under the same conditions, or 30 FPS with max objects. Adding clouds changes little to nothing in terms of performance, at least in my rig. I seem to see just a few micro-stutters compared to beta 3, but the performance is certainly better and I know the stutters (which are very minor) will disappear with later optimizations. I find this whole beta test hugely encouraging, and as I have said before, X-Plane 11.5 looks to me like it will be transformative in terms of performance.
One other benefit, at least to me, is that with reduced load on the CPU everything is working better: all my add-ons, the Saitek FIPs etc. I have far fewer performance problems on the rest of the gear in the sim now that X-Plane is more efficient. Overall it’s produced a far more solid and trouble-free experience. I have to say — knock on wood — that the simulator is performing extremely well and it’s been a pleasure to use.