FPS Drops Issue - Need advice!

Like most with PoE I have had various issue's over the years due to performance but the game for the most part is still fully playable.

During this league however I am getting crippling combat lag that makes certain builds impossible to play. The worst lag comes during combat or to be more specific AoE (or when hitting multipul targets like Tornado Shot etc)

Secondly the FPS drops are worse within the mapping enviroment compared to leveling, it's laggy but playable 90% of the time.

Below is a screenshot of what it looks like currently playing my CycloneFlame character.
As soon as I cyclone into a pack of mobs the FPS pretty much hit's zero and the game chokes up. I have monitored CPU/Memeory Usage etc during this and they do not fluctuate it's only a FPS spike and from my GPU monitor nothing is happening there either.



I've changed every graphics setting availiable within game aswell the FPS drops are the same running full high or potatoe graphics.

I really enjoy this game and with the upcoming league and the combination of Breach/Perandus etc I feel like It's going to be impossible for me to play the content properly.

I've pulled out what might be useful from DxDiag to know any of my specs. Any help whatsoever would be greatly apprecciated.

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System Information
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Time of this report: 2/20/2017, 12:23:22
Operating System: Windows 10 Pro 64-bit
System Manufacturer: Gigabyte Technology Co., Ltd.
System Model: GA-78LMT-USB3
BIOS: Award Modular BIOS v6.00PG
Processor: AMD FX(tm)-8350 Eight-Core Processor (8 CPUs), ~4.0GHz
Memory: 8192MB RAM
Available OS Memory: 8174MB RAM
Page File: 4503MB used, 5590MB available
DirectX Version: DirectX 12
Card name: NVIDIA GeForce GTX 970
Display Memory: 8146 MB
Dedicated Memory: 4059 MB
Shared Memory: 4086 MB
Current Mode: 1920 x 1080 (32 bit) (50Hz)