Question / Help Custom x264 settings video capture (not streaming)

[Aresias]

Hi
I am looking to make custom settings to record video games for maximum quality at 1080p 60fps (no streaming).
I put the quality of 10. Maximum bitrate 40 000 and buffer size 40 000.
x264 CPU preset: ultrafast if set it to superfast it requires too many resources/
So I check custom x264 settings to find a compromise between ultrafast and superfast settings.
i don't know any effect of these settings so i don't know what to do.
i tried something like:
cabac=1 me=hex crf=18 and these settings seems to reduce artefacts alot but i don't know if this is the best way to increase quality: deblock=1:0:0 and subme=1.

i tried to set all settings using x264vfw codec, create a stat file and copy/paste all settings to OBC:

bitdepth=8 cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x13 me=hex subme=0
psy=1 fade_compensate=0.00 psy_rd=0.00:0.00 mixed_ref=1 me_range=16 chroma_me=0 trellis=1 8x8dct=1
deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=4 lookahead_threads=4 sliced_threads=1 slices=4 nr=0
decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25
scenecut=40 intra_refresh=0 rc=crf mbtree=0 crf=18.0000 qcomp=0.60 qpmin=10 qpmax=51 qpstep=4 ip_ratio=1.40
aq=1:1.00

...but i only know a few of those settings and i don't know if they are usefull or not, if they increase quality and if they are efficient etc please help =)
(sorry for my english)
CPU I52500k @3.8ghz turbo off, 4go, radeon HD6950, seven 64.

 

[R1CH]

For maximum quality local recording, set advanced options as follows:

crf=0

then in the OBS encoding options, set CBR off and bitrate to 0. This will generate a lossless quality file, which may require large amounts of CPU time and disk space. Raise the CRF if you don't want lossless, generally crf 15 or so is considered very high quality.

 

[Aresias]

Edit: Thanks this is exactly what i was looking for. Quality is perfect whith crf=12~15 and bitrate is around 50kb~100kb/s