Why don't you actually measure performance during that pass? Would be more useful than just guessing.
I literally just did that, 20+ runs even dropping my base frequency to 1600mhz, I could *not* get an average result as low as your 5700 & I was only able to get it to match your XT result by literally staring at a section that dropped the fps to 112 for a good 5-10s of the 1min run.
I even tried shortening the run to avoid staring at high fps scenery for too long because apart from one section(after the broken wall staring at the ship before dropping down), the rest of the scene runs at ~150-160fps+.
So here are my results, & for a good portion of it I was purposely trying to stare at low fps sections to drop the average down on purpose along with dropping my RX 5700 frequency from boost of around 1700mhz down to 1600mhz base.
Ultra preset 1080p, RS-off::
24-03-2020, 14:28:09 DOOMEternalx64vk.exe benchmark completed, 10829 frames rendered in 66.281 s
Average framerate : 163.3 FPS
Minimum framerate : 115.0 FPS
Maximum framerate : 233.1 FPS
1% low framerate : 107.1 FPS
0.1% low framerate : 60.7 FPS
24-03-2020, 14:31:16 DOOMEternalx64vk.exe benchmark completed, 10897 frames rendered in 62.656 s
Average framerate : 173.9 FPS
Minimum framerate : 126.6 FPS
Maximum framerate : 212.9 FPS
1% low framerate : 126.0 FPS
0.1% low framerate : 108.6 FPS
24-03-2020, 14:32:31 DOOMEternalx64vk.exe benchmark completed, 10129 frames rendered in 62.594 s
Average framerate : 161.8 FPS
Minimum framerate : 116.3 FPS
Maximum framerate : 230.5 FPS
1% low framerate : 110.5 FPS
0.1% low framerate : 98.0 FPS
24-03-2020, 14:33:50 DOOMEternalx64vk.exe benchmark completed, 10752 frames rendered in 62.578 s
Average framerate : 171.8 FPS
Minimum framerate : 116.1 FPS
Maximum framerate : 245.6 FPS
1% low framerate : 112.3 FPS
0.1% low framerate : 98.0 FPS
24-03-2020, 14:35:26 DOOMEternalx64vk.exe benchmark completed, 10511 frames rendered in 62.218 s
Average framerate : 168.9 FPS
Minimum framerate : 131.4 FPS
Maximum framerate : 224.2 FPS
1% low framerate : 127.9 FPS
0.1% low framerate : 102.0 FPS
24-03-2020, 14:36:42 DOOMEternalx64vk.exe benchmark completed, 9011 frames rendered in 56.094 s
Average framerate : 160.6 FPS
Minimum framerate : 117.3 FPS
Maximum framerate : 215.3 FPS
1% low framerate : 109.5 FPS
0.1% low framerate : 92.7 FPS
24-03-2020, 14:38:31 DOOMEternalx64vk.exe benchmark completed, 8625 frames rendered in 55.094 s
Average framerate : 156.5 FPS
Minimum framerate : 111.0 FPS
Maximum framerate : 233.1 FPS
1% low framerate : 108.8 FPS
0.1% low framerate : 99.1 FPS
24-03-2020, 14:42:08 DOOMEternalx64vk.exe benchmark completed, 7953 frames rendered in 52.984 s
Average framerate : 150.1 FPS
Minimum framerate : 111.6 FPS
Maximum framerate : 193.3 FPS
1% low framerate : 105.7 FPS
0.1% low framerate : 87.2 FPS
24-03-2020, 14:43:17 DOOMEternalx64vk.exe benchmark completed, 8852 frames rendered in 57.735 s
Average framerate : 153.3 FPS
Minimum framerate : 111.1 FPS
Maximum framerate : 222.3 FPS
1% low framerate : 104.2 FPS
0.1% low framerate : 69.9 FPS
24-03-2020, 14:45:33 DOOMEternalx64vk.exe benchmark completed, 9049 frames rendered in 58.375 s
Average framerate : 155.0 FPS
Minimum framerate : 108.5 FPS
Maximum framerate : 192.9 FPS
1% low framerate : 105.1 FPS
0.1% low framerate : 95.0 FPS
24-03-2020, 14:50:09 DOOMEternalx64vk.exe benchmark completed, 6758 frames rendered in 42.078 s
Average framerate : 160.6 FPS
Minimum framerate : 114.0 FPS
Maximum framerate : 193.2 FPS
1% low framerate : 109.5 FPS
0.1% low framerate : 97.1 FPS
24-03-2020, 14:52:15 DOOMEternalx64vk.exe benchmark completed, 6323 frames rendered in 40.657 s
Average framerate : 155.5 FPS
Minimum framerate : 112.7 FPS
Maximum framerate : 196.5 FPS
1% low framerate : 105.5 FPS
0.1% low framerate : 100.1 FPS
24-03-2020, 14:53:40 DOOMEternalx64vk.exe benchmark completed, 8693 frames rendered in 54.969 s
Average framerate : 158.1 FPS
Minimum framerate : 117.2 FPS
Maximum framerate : 214.7 FPS
1% low framerate : 110.7 FPS
0.1% low framerate : 101.0 FPS
24-03-2020, 14:56:36 DOOMEternalx64vk.exe benchmark completed, 6425 frames rendered in 42.688 s
Average framerate : 150.5 FPS
Minimum framerate : 109.8 FPS
Maximum framerate : 197.9 FPS
1% low framerate : 104.8 FPS
0.1% low framerate : 95.8 FPS
24-03-2020, 14:57:23 DOOMEternalx64vk.exe benchmark completed, 5890 frames rendered in 40.390 s
Average framerate : 145.8 FPS
Minimum framerate : 105.8 FPS
Maximum framerate : 183.4 FPS
1% low framerate : 102.2 FPS
0.1% low framerate : 93.7 FPS
24-03-2020, 14:58:20 DOOMEternalx64vk.exe benchmark completed, 6104 frames rendered in 41.563 s
Average framerate : 146.8 FPS
Minimum framerate : 108.8 FPS
Maximum framerate : 174.1 FPS
1% low framerate : 102.6 FPS
0.1% low framerate : 96.1 FPS
24-03-2020, 15:01:03 DOOMEternalx64vk.exe benchmark completed, 8776 frames rendered in 56.328 s
Average framerate : 155.8 FPS
Minimum framerate : 111.7 FPS
Maximum framerate : 218.3 FPS
1% low framerate : 105.5 FPS
0.1% low framerate : 96.4 FPS
24-03-2020, 15:02:31 DOOMEternalx64vk.exe benchmark completed, 8778 frames rendered in 59.203 s
Average framerate : 148.2 FPS
Minimum framerate : 110.6 FPS
Maximum framerate : 203.9 FPS
1% low framerate : 106.5 FPS
0.1% low framerate : 99.2 FPS
24-03-2020, 15:04:05 DOOMEternalx64vk.exe benchmark completed, 10796 frames rendered in 69.281 s
Average framerate : 155.8 FPS
Minimum framerate : 110.6 FPS
Maximum framerate : 222.5 FPS
1% low framerate : 106.2 FPS
0.1% low framerate : 97.9 FPS
24-03-2020, 15:06:35 DOOMEternalx64vk.exe benchmark completed, 8343 frames rendered in 53.187 s
Average framerate : 156.8 FPS
Minimum framerate : 117.2 FPS
Maximum framerate : 200.9 FPS
1% low framerate : 109.2 FPS
0.1% low framerate : 83.4 FPS
24-03-2020, 15:08:32 DOOMEternalx64vk.exe benchmark completed, 9227 frames rendered in 55.438 s
Average framerate : 166.4 FPS
Minimum framerate : 115.9 FPS
Maximum framerate : 227.6 FPS
1% low framerate : 112.0 FPS
0.1% low framerate : 97.7 FPS
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At least the 1% lows seem to be lining up but I'm also running a weaker test bench so it's a bit of a given imo,, I hope these results at least give you guys a second to pause & look into it. I'm uploading a video showing how I tried to replicate your benchmark run & was unable to get the avg to drop under 145.
When a big review site posts benchmarks for a game that normally favors AMD showing weak performance that makes Nvidia look good, it's kind a big deal that those results are 110% accurate.
Anyway, please look into it, as usual great content & appreciate all the hard work that went into it but a discrepancy can't be ignored.
I also went to the same 'scenes' you posted screenshots of & had higher framerates at all of them.