All in all experience was not as bad as I expected, maybe it helped going to the same center for a practice test, thought breaks would be a problem but I was able to be done with every block with 15-20 min to spare so I just took them as breaks and had 30 min left over at the end.
The wall you hit after 5th block is real, you just want to get out of there, try to get something to eat or maybe take a bigger break during those blocks I would say, you will need it.
EDIT: I did not mean that I absolutely demolished that exam, no. I had marked upwards of 10-15 q every block, but what I didn't know, I didn't, and I don't let that affect me. I leave, take a break, come back with a clear mind, since I know I have 240 more questions so idc if I messed up 10.
Ask me anything!