SVP RECODE ignoring my set video bitrate

Sorry
Here ya go.

19:07:44.096: Command line: C:\Program Files (x86)\SVP 4\mpv64\mpv.exe H:/Justice League Crisis On Infinite Earths Parts 1-2-3/New folder/downsize 6-8-12  23.976fps-1080p (orig).mkv --o=H:/Justice League Crisis On Infinite Earths Parts 1-2-3/New folder/downsize 6-8-12  23.976fps-1080p (orig).SVP.VO.mkv --no-audio --no-sub --no-sub-auto --input-ipc-server=mpvencodepipe --input-media-keys=no --no-msg-color --video-crop=0x0+0+0 --vf=vapoursynth:[C:\Users\darre\AppData\Roaming\SVP4\scripts\ffff.py]:4:8 --ovc=hevc_nvenc --ovcopts=b=16026000,preset=slow,rc=cbr,maxrate=17000000,bufsize=20000000,time_base=1000/59940,threads=8
19:07:44.426: ● Video --vid=1 (hevc 1920x1080 23.976 fps) [default]
19:07:44.427: File tags:
19:07:44.427: Title: Crisis on Infinite Earths (part 1)
19:07:44.774: vstrt: TensorRT version mismatch, built with 100500 but loaded with 100400; continue but fingers crossed...
19:07:45.637: [autoconvert] Converting yuv420p10 -> p010
19:07:45.672: VO: [lavc] 1920x1080 p010
19:07:45.672: [vo/lavc] Opening encoder: NVIDIA NVENC hevc encoder [hevc_nvenc]
19:07:45.872: [encode] Opening output file: H:/Justice League Crisis On Infinite Earths Parts 1-2-3/New folder/downsize 6-8-12 23.976fps-1080p (orig).SVP.VO.mkv
19:07:45.873: [encode] Opening muxer: Matroska [matroska]
19:07:45.915: V: 00:00:00 / 01:32:49 (0%) {4.4min 0.0MB}
19:08:45.916: V: 00:01:30 / 01:32:49 (2%) {26.3min 90.6fps 3960.7MB}
19:09:45.981: V: 00:03:02 / 01:32:49 (3%) {36.3min 91.1fps 4753.5MB}
19:10:46.005: V: 00:04:34 / 01:32:49 (5%) {45.5min 91.4fps 5455.1MB}
19:11:46.021: V: 00:06:05 / 01:32:49 (7%) {53.1min 91.3fps 5939.2MB}
19:12:46.023: V: 00:07:38 / 01:32:49 (8%) {57.6min 91.5fps 6371.1MB}
19:13:46.044: V: 00:09:10 / 01:32:49 (10%) {58.2min 91.6fps 6710.1MB}
19:14:46.053: V: 00:10:43 / 01:32:49 (12%) {62.1min 91.8fps 6886.2MB}
19:15:46.127: V: 00:12:15 / 01:32:49 (13%) {65.0min 91.8fps 6977.2MB}
19:16:46.198: V: 00:13:48 / 01:32:49 (15%) {68.5min 91.9fps 7094.6MB}
19:17:46.218: V: 00:15:20 / 01:32:49 (17%) {69.4min 91.9fps 7083.7MB}
19:18:46.232: V: 00:16:53 / 01:32:49 (18%) {66.5min 91.9fps 7178.8MB}
19:19:46.257: V: 00:18:25 / 01:32:49 (20%) {63.2min 91.9fps 7062.0MB}
19:20:46.285: V: 00:19:57 / 01:32:49 (21%) {62.0min 91.9fps 7050.1MB}
19:21:46.326: V: 00:21:29 / 01:32:49 (23%) {61.6min 92.0fps 7116.6MB}
19:22:46.332: V: 00:23:01 / 01:32:49 (25%) {60.1min 92.0fps 7105.7MB}
19:23:46.390: V: 00:24:34 / 01:32:49 (26%) {57.2min 92.0fps 7068.7MB}
19:24:46.398: V: 00:26:07 / 01:32:49 (28%) {56.3min 92.0fps 7075.6MB}
19:25:46.419: V: 00:27:38 / 01:32:49 (30%) {54.1min 92.0fps 6969.2MB}
19:26:46.430: V: 00:29:10 / 01:32:49 (31%) {54.4min 92.0fps 7023.4MB}
19:27:46.482: V: 00:30:42 / 01:32:49 (33%) {53.1min 92.0fps 6994.2MB}
19:28:46.498: V: 00:32:15 / 01:32:49 (35%) {54.3min 92.0fps 7045.3MB}
19:29:46.625: V: 00:33:48 / 01:32:49 (36%) {53.2min 92.0fps 7015.3MB}
19:30:46.671: V: 00:35:20 / 01:32:49 (38%) {49.6min 92.0fps 6887.2MB}
19:31:46.683: V: 00:36:51 / 01:32:49 (40%) {43.8min 92.0fps 6597.7MB}
19:32:46.730: V: 00:38:22 / 01:32:49 (41%) {41.5min 91.9fps 6551.1MB}
19:33:46.767: V: 00:39:54 / 01:32:49 (43%) {40.3min 91.9fps 6569.5MB}
19:34:46.788: V: 00:41:26 / 01:32:49 (45%) {39.0min 91.9fps 6586.9MB}
19:35:46.856: V: 00:42:58 / 01:32:49 (46%) {39.3min 91.9fps 6646.0MB}
19:36:46.865: V: 00:44:31 / 01:32:49 (48%) {38.9min 92.0fps 6671.7MB}
19:37:46.955: V: 00:46:04 / 01:32:49 (50%) {39.0min 92.0fps 6728.8MB}
19:38:47.093: V: 00:47:37 / 01:32:49 (51%) {39.5min 92.0fps 6755.6MB}
19:39:47.108: V: 00:49:09 / 01:32:49 (53%) {40.2min 92.0fps 6789.6MB}
19:40:47.113: V: 00:50:41 / 01:32:49 (55%) {38.1min 92.0fps 6716.5MB}
19:41:47.161: V: 00:52:13 / 01:32:49 (56%) {37.7min 92.0fps 6712.6MB}
19:42:47.179: V: 00:53:44 / 01:32:49 (58%) {36.5min 92.0fps 6684.8MB}
19:43:47.390: V: 00:55:16 / 01:32:49 (60%) {35.0min 91.9fps 6663.3MB}
19:44:47.435: V: 00:56:48 / 01:32:49 (61%) {34.2min 91.9fps 6694.9MB}
19:45:47.500: V: 00:58:19 / 01:32:49 (63%) {32.3min 91.9fps 6667.9MB}
19:46:47.502: V: 00:59:50 / 01:32:49 (64%) {31.0min 91.9fps 6675.1MB}
19:47:47.547: V: 01:01:20 / 01:32:49 (66%) {29.2min 91.9fps 6659.4MB}
19:48:47.608: V: 01:02:51 / 01:32:49 (68%) {26.7min 91.8fps 6567.7MB}
19:49:47.609: V: 01:04:22 / 01:32:49 (69%) {25.5min 91.8fps 6554.2MB}
19:50:47.703: V: 01:05:54 / 01:32:49 (71%) {24.0min 91.8fps 6528.4MB}
19:51:47.711: V: 01:07:25 / 01:32:49 (73%) {21.0min 91.8fps 6415.5MB}
19:52:47.869: V: 01:08:57 / 01:32:49 (74%) {19.1min 91.8fps 6370.6MB}
19:53:47.927: V: 01:10:30 / 01:32:49 (76%) {18.9min 91.8fps 6398.6MB}
19:54:47.928: V: 01:12:02 / 01:32:49 (78%) {18.6min 91.8fps 6411.8MB}
19:55:47.935: V: 01:13:34 / 01:32:49 (79%) {17.7min 91.8fps 6440.6MB}
19:56:47.961: V: 01:15:06 / 01:32:49 (81%) {16.5min 91.8fps 6427.2MB}
19:57:48.007: V: 01:16:39 / 01:32:49 (83%) {15.5min 91.8fps 6446.5MB}
19:58:48.018: V: 01:18:11 / 01:32:49 (84%) {15.0min 91.8fps 6463.5MB}
19:59:48.099: V: 01:19:44 / 01:32:49 (86%) {14.3min 91.8fps 6473.2MB}
20:00:48.145: V: 01:21:15 / 01:32:49 (88%) {12.6min 91.8fps 6468.4MB}
20:01:48.275: V: 01:22:48 / 01:32:49 (89%) {10.7min 91.8fps 6428.0MB}
20:02:48.352: V: 01:24:20 / 01:32:49 (91%) {9.7min 91.8fps 6422.6MB}
20:03:48.386: V: 01:25:53 / 01:32:49 (93%) {8.7min 91.9fps 6435.9MB}
20:04:48.399: V: 01:27:27 / 01:32:49 (94%) {8.0min 91.9fps 6454.2MB}
20:05:48.402: V: 01:28:59 / 01:32:49 (96%) {7.2min 91.9fps 6448.8MB}
20:06:48.419: V: 01:30:32 / 01:32:49 (98%) {4.8min 91.9fps 6343.5MB}
20:07:48.441: V: 01:32:03 / 01:32:49 (99%) {1.3min 91.9fps 6171.4MB}
20:08:19.357: [encode] video: encoded 6405554858 bytes
20:08:19.357: [encode] audio: encoded 0 bytes
20:08:19.357: [encode] muxing overhead 2511340 bytes
20:08:19.357: Exiting... (End of file)

dunno, just tried on 2060 - with these settings the output bitrate is 16M
maybe it depends on the video card model and/or driver version