I recently told my server support and changed some DDOS protection settings, because I am facing a huge ddos attacks. After 2 to 3 days, half amount of my players could’n t load map and textures. If they press esc or P, it will stuck loading forever, also spawn as a ped. What could cause this problem? Some people say ddos attacks have broke some players database. Some people say essential mode bugs. I have to fix it as soon as possible.
If you have very strict firewall rules, your server could be blocking clients from downloading resources, as it might see the downloading of large files (such as YMAPs, Vehicles, etc.) as attacks.
I would have another chat with your provider and ask them to tune it down a bit, see if that helps.
Just fixed the problem, but I am getting insane ddos attacks from more than 1000ip, I’ve paid $600 USD for an anti ddos dedicated server. The attacks are too big or the server is shit ? ( Intel Xeon E3-1270v6/ 100GBPS Attack Filtering / 20 TB Bandwidth. )
Who did you managed to piss off to get that kind of response 
Jokes aside though, if you’re needing to spend that kind of money on DDOS protection, I would get your local police involved, if you have not done so already.
I figured out if I ignore the ddos attacks and let the server running, my users database will mess up. So, I setup web-admin and bot. Every time the server detects ddos attack, the server will restart automatically.