I noticed, when i hit a speed pylon and also at the later part of a GR, my resources suddenly deplete way faster with those skills.
-I use more resource, because i shoot/hit more often with those skills, after i used a speed pylon?! then there’s a flaw to be repaired imo.
-And also it could be that there’s an algorithm, making those skills more resource expensive nearing the end of a GR.
I cannot explain or prove it…comments? 
I think a speed pylon also increases your attack speed for the same duration. If you attack faster with resource spending attacks, obviously you spend the resources faster too. This is also true for any resource spending build with Echoing Fury in it. Faster attack, faster resources spending.
Speed pylons and frenzy shrines increase your attack speed which in turn increases your channeling cost per second. However, in the case of the GoD 4-piece set bonus, this does not increase the number of primaries generated while strafing since there is an internal cooldown built in (you can’t generate more than 5 or 6 primaries per second while strafing).
This is the case for (nearly) all builds using resource. Faster AS = faster resource usage. Makes perfect sense.
Works as intended.
Tickrate of channeling skills scale with attack speed, so it’s normal that you consume more resources over time.
You will also notice stacks dont build up. They get to around 8 and start over.
to make a resumé for all reactions (and my own suspicion):
-there is a logical reason, but if a pylon must be evaded for it because i fall without resource when the riftboss shows up, it’s an unique flaw imo.
-i really suggest giving channeling skills a pass on this, to preserve the build. 
Long time since I last played PoJ TR build, so can’t say much about it, as for GoD, I doubt speed pylon will actually make you drain resource even while you were hitting enemies with your primary attacks.
Despite attack speed boost from speed pylon or Echoing Fury feels quite huge, in terms your actual attack per second, it doesn’t increase that much. My resource never drained even with speed pylon buff. If there were something like waller, which prevented you from hitting mobs, or no mob near you at the time (while moving), yes, your resource will drain faster.
In my case, i’ve several channeling builds, but the resource problem occurs rarely.
-Because i play only mid-level, i can handle it.
-But imagine rushing at 60%-100%-more% speed and then having to read the pylon, before not touching it: save channeling builds from this gameplay flaw please.
A little present:
Or, this could mean mobs die too fast for your primary to hit them again, making you drain resoure while not replenishing it fast enough (basically making it same as moving in an open field with no mobs).
I still doubt in a normal situation you would lose resource faster than you could replenish them. In a speed run situation, most players prefer Yang also so.
Then again, I do remember that having speed pylon buff makes you lose dps for bow+quiver users. I don’t read pylon texts actually, I check the minimap and the icon to figure what pylon is up ahead. Try doing that and not click speed pylon.
And here’s a tip, lose paragon points on attack speed. That will increase your dps. If you want explanation, ask, I’ll try to explain of what I know.
yes maybe (primary meaning main attack skill), good one.
good tip.
No explanation needed? 
Normally, people will say that’s nonsense. It has to do with keeping attack speed in 1.50001-1.66666 range for bow+quiver user. This will keep Strafe in 9 frame breakpoint, GoD 4 pc primary shot having 9 frame ICD and stuff.
Rock n’ Roll starts with an Attack Speed at 2.50…