I got tired waiting for an official fix, so I came up with this workaround.
twrp-flashable_OPX2.2.0_camera_patch.zip - This zip with apply the OPX front camera configuration.
twrp-flashable_OPX_camera_patch_imx214.zip - This zip will apply the OPO rear camera configuration
You'll be able to record 1080p at night without worrying about the fps drop issue.
I am not responsible for any damage on your device when applying this patch.
EDIT: Added a revert flashable zip.
EDIT2: Added zip file with imx214 libchromatix_default_video.so