R4lNM4N :
What happens when you select the balanced plan. Then go into plan settings. Then advanced settings. Try these steps if it doesn't work...
Open control panel and goto Power Options > change Plan settings > Advanced Power Settings
+Sleep
Allow hybrid Sleep > disabled
Allow wake timers > disable/enable try both settings
+USB
USB selective suspend > ENABLE
+When Shareing media [ This is the critical one ]
Set to allow the computer to sleep
Also, are you absolutely certain that you have the latest video driver installed? Did it install the AMD Catalyst Control Center?
Because I just found this...
https://www.reddit.com/r/techsupport/comments/2t5p03/sleep_mode_issue_with_latest_amd_catalyst/
I have always had the balanced plan on but just showed you the high performance ones after watching that page you linked me.
Here are all the options I get on opening advanced settings for the balanced power option:
http://imgur.com/a/jINGD/all
Yes, I do have the Catalyst Control Center installed and I am pretty sure I am using the latest version from the sapphire website as I was using the same one before I upgraded my system and had no problems in going to sleep or waking up the computer. Although I just checked for an update and it shows one but I don't feel like it's a significant one as it's not been showing up on the sapphire website and I doubt my sapphire gpu will be compatible with the drivers from the AMD website as I have tried it before with really bad results. Here is a screenshot of the version mentioned in the Catalyst Control Center window:
http://i.imgur.com/soo0TRn.png
I'll just put my whole configuration here:
MoBo - B85M-DS3H-A
Processor - i5 4460 @ 3.2gHz
RAM - G.Skill RipjawsX DDR3 8 GB (2 x 4 GB) PC DRAM (F3-12800CL9D-8GBXL) and a 4gB Transcend and 2gB Kingston
Memory - Samsung 120 GB 2.5 inch 840 EVO SATA III SSD, a WD 7200rpm 1Tb HDD and a Seagate 5400rpm 160gB HDD
PSU - CORSAIR CMPSU-600CXV2UK 600 Watts
Hope this info helps.