Guild Wars 2

I play the game just fine with the desired setting but when i get to HoT Maps it really becomes unplayable i dont really know what happens but from 60 fps i go to like 2 or 3 when i turn the screen or even if i am walking just on these Maps
i have Intel core i5-2400 CPU,3.1GHz
Ram 4 GB
INVIDIA GEFORCE, GTX 550 Ti,

Sadly it is both a combination of low RAM and older CPU. If you are running a 64bit OS, I suggest running no less than 8GB. The other part is the fact your CPU is 6 years old and really isn’t up to par.

GW2 is like 95% CPU/RAM, 5% GPU. I would suggest upping your ram, 1066 or 1333 DDR3 required based on your CPU.

I have a big fps drop in the nightmare challenge mode fractal, during the fight. probably particle clutter or sth.

You have to remember that Central Tyria maps are pretty dated. The game was released in 2012, but the textures are obviously way older than that, so it’s pretty obvious why your old rig can handle those maps just fine.
HoT on the other hand, as you surely have noticed, is visibly much more dense when it comes to environments and effects.

In short, i’m afraid there is no way around it, but to upgrade your PC.

Your computer is (mostly) fine.

It’s the 4gb of ram that’s holding you back. With Gw2, I use 5-6 gb of ram even with little else in the background. So it’s no surprise the game runs fine until the HoT maps use up your memory.

Assuming you have a 64-bit system (which you really should), all you need to do is spend ~$50 on 8 gb of ram. (unless you have free slots, then it’ll be $~25 for 4 more). Also toss out any dust in the PC itself while you’re at it. Well, do that anyways even if you’re not upgrading.

Barring that, try to close unneeded programs at startup and in the background. This will not solve the problem but it can mitigste it.