F.E.A.R. Collection - Stuttering FPS **RESOLVED**

[Adamplex Gaming]

So I'm not quite sure why but randomly when I'm playing (@720p originally but switched to 1024x768 for compatibility), the game begins to stutter horribly! Like it goes from butter smoothe to well under 25fps. I thought at first that my AMD Dual Graphics configuration (which utilizes the AMD-A8's built-in APU to run Crossfire with my dedicated HD6570) was causing the issue as I read reports that it causes "Microstuttering".

Now I'm just running the dedicated graphics card by itself, no crossfire. I updated all the drivers and checked for client updates but I'm all up to date. This game is older so it should run like butter on any current gen card.

BUT IT STILL CONTINUES TO STUTTER RANDOMLY!!! X(

Once it starts to stutter, it doesn't get any better, as I initially thought it was just perhaps a specific scene but no, it's constant after that. And here's how I know it's a problem and not an isolated event, I can quicksave and exit the game, come back in and load that same sequence and it's buttery smoothe again until the stuttering starts randomly. :/

I'm not even doing anything intesnse when it happens... GARRRRR. help!

Specs:
AMD A8-5600K @ 4.3GHz Quad Core
AMD/ATI Radeon HD6570 @ 2GB (~5.8GB[dxdiag]) Core Edition
PNY 8GB RAM @ 1333MHz DDR3
320GB SATA 7200RPM Seagate HDD (Internal)
Windows 8 - 64Bit (Build 9200)

[Fallace-box]

Check the options to see if there are any settings for PhysX. If so, make sure they are disabled because PhysX is an Nvidia system and causes havoc with AMD graphics cards. I use an AMD Radeon 7950 3GB and had similar issues with Mirror's Edge and Mafia 2, enabling PhysX gave me fps issues that rendered the game unplayable.

[Adamplex Gaming]

There is a Physics section in the game, but nothing branded "Physx" which I am familiar with. Any other suggestions? I've literally ran this game on lowest settings and it still seems to occur so I ran an integrity check on the game cache to make sure I didn't have any messed up files and nope, no solution.

[Adamplex Gaming]

Please guys! I hate to bump but this is getting out of hand. I wanted my Halloween to be spent playing F.E.A.R. Collection and I can't even get through the first game with this kind of performance :(

[Adamplex Gaming]

** RESOLVED **

Thanks to this link to a long and forgotten solution, I've been able to get my game running at max fps for hours upon hours:
http://forums.steampowered.com/forums/showthread.php?t=1279444

Solution:
If you have any Logitech Devices such as a G-Series Mouse or Keyboard, yes even the older ones, it turns out the the developers over at Monolith, never bothered to patch or update an issue where the polling rate of the G-Series products would cause the game to become extremely stuttery at ranom points.

So because of some squabble where we the gamers get screwed in the end, Logitech and Monolith abandoned the issue.

What do you do? Simply go into Device Manager and disable any and all HID-Compliant devices under Human-Interface Devices categeory. Now I did notice I was able to leave some on and still get my desired gameplay.

The main ones you need to focus on are any HID-Compliant devices related to your Logitech Devices, and this can be done by trial and error. Now don't confuse this with "USB Input Devices", as those you can leave on. And for those of you like me may or may not use a Logitech Bluetooth Unifying Reciever, you can disable all but ONE of the HID-Compliant Device Drivers of the Unifying Reciever, again this is figured out by trial and error.

If you have corded accessories then you should be able to indiscriminately disable all HID-Compliant Devices and not worry but again I tell you, do NOT disable USB Input Devices, those are different and are required for many of your USB Devices to FUNCTION.

I'd say thanks for the solution, but I had to find it myself so instead, You're Welcome to anyone who finds this post in the future or who buys the F.E.A.R. Collection on sale for October 30-Nov 1 like I did.

- Skiz