@Fudge, Hmmm… I’m not too sure about this one. Wait a few and see if someone else with a bit more advanced knowledge can assist, haha!
EDIT I know you were saying your internet is rather slow and a fresh install of GTAV would take some time, but this could fix your issue! I would highly suggest that you give it a try, as most moderators and devs will tell you that this is important for FiveM to run smoothly.
@XTheGreatJamesX, there have been some occasions that I have noticed a crash to have multiple different reasonings behind it. Please upload a copy of your CitixenFX.log file and let me take a look. Also, in the future, please don’t hijack someone’s support thread!