Some help on optimizing boot times and upgrade

[Artcool]

Hi,
i have my system running ok (kaly 10.5.2), but i'm having a long boot time (the boot pauses for about 40 seconds in the IOKITwait), is there anything i can do to solve this? Besides this i have a relative good Xbench (about 85.75) output , i think i could have better scores if using a video card instead of onboard video, but i can be wrong...

thanks for any help.