i am using i3, gtx 550 ti and its still fine.

Just guessing, did the driver accidentally switched to integrated intel GPU?

Download the tool CrystalDiskInfo, it will show you the health status.
If it says good then it's fine.
http://crystalmark.info/en/download/

New league start always a bit cheaper since there isn't much currencies in circulation.
In another month the rate will likely stabilize to around 70c:1ex.
Standard is as ridiculous as always due to large amount of currencies in circulation, but some items can be cheaper in contrast at the least.

You really don't need to level up Immortal Call much, cuz the base duration didn't change at all.
You can reduce gem level by vendor the gem + 1x Scouring orb, if you don't want to grab a new one.

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Geezuz cries the PoE reddit / official forum is full of salty whiny spoiled shit babies recently. 
Better stay off those places.

It's not really the first time people dislike a league, or mistakes & miscalculation happens. People are severely over reacting to the point of now looks more like a bunch of spoiled brats crying for unreasonable demands.
I do agree with what Mathil said, that was already in my mind in the first two days of the league - rare recipe is crap; essence is better.
What I dislike is the amount of sway that streamers & youtubers have in this game, some of them really needs to mind their behaviors.
If find something that feels like exploit, quietly contact GGG immediately; not showing off on YouTube and Reddit, that's completely retard.

I still have 10 more challenges to reach my goal, best stay out of those places to maintain my enjoyment and sanity.

hmm....  let say i got 4 prophecies was ACT 2-4; may be 2 is some thing higher tier map; so what i need to do is which ever prophecy that CURRENTLY appeared from Navali, i got complete, mean i need to travel back to old ACT 2-4, if it say need carry bla bla bow or amulet or xxx items, then i just follow that and kill that ACT 2-4 boss, and i will fulfill this prophecy? each prophecy once completed will not repeat right? i remember it got challenge tracking.

i am interest on the 5L, 6L prophecy but i not quite understand, it grant me 6L or i use fuse of orb gambling to get 6L to fulfill prophecy?  one more, how hard to get that +100 all attribute amulet? i really need that to solve all my requirement issue, 100+16=116/2= 58 LIFE as well

after heard what you said, i suddenly see very bright SUN i can get 6L chance i need to check back whether i complete 5L /6L or not, so worried i did that stupidly...;

if i yet do that, mean i need to settle death harp item prophecy, then carry it to settle boss get Opus, then only to do 6L  one more, what is sealed the prophecy really mean? the prophecy will not gone right once it is not fulfill, then why need to sealed it?

mean i seal this prophecy then complete this prophecy and it will let me sell this prophecy?