This is my PC's specs.

Computer Information:
Manufacturer: To be filled by O.E.M.
Model: To be filled by O.E.M.
Form Factor: Desktop
No Touch Input Detected

Processor Information:
CPU Vendor: AuthenticAMD
CPU Brand: AMD Phenom(tm) II X6 1045T Processor
CPU Family: 0x10
CPU Model: 0xa
CPU Stepping: 0x0
CPU Type: 0x0
Speed: 3142 Mhz
6 logical processors
6 physical processors
HyperThreading: Unsupported
FCMOV: Supported
SSE2: Supported
SSE3: Supported
SSSE3: Unsupported
SSE4a: Supported
SSE41: Unsupported
SSE42: Unsupported
AES: Unsupported
AVX: Unsupported
CMPXCHG16B: Supported
LAHF/SAHF: Supported
PrefetchW: Unsupported

Operating System Version:
Windows 10 (64 bit)
NTFS: Supported
Crypto Provider Codes: Supported 311 0x0 0x0 0x0

Video Card:
Driver: NVIDIA GeForce GTX 560
DirectX Driver Name: nvldumd.dll
Driver Version: 23.21.13.8813
DirectX Driver Version: 23.21.13.8813
Driver Date: 10 27 2017
OpenGL Version: 4.6
Desktop Color Depth: 32 bits per pixel
Monitor Refresh Rate: 60 Hz
DirectX Card: NVIDIA GeForce GTX 560
VendorID: 0x10de
DeviceID: 0x1201
Revision: 0xa1
Number of Monitors: 1
Number of Logical Video Cards: 1
No SLI or Crossfire Detected
Primary Display Resolution: 1920 x 1080
Desktop Resolution: 1920 x 1080
Primary Display Size: 20.91" x 11.77" (23.98" diag)
53.1cm x 29.9cm (60.9cm diag)
Primary Bus: PCI Express 16x
Primary VRAM: 2047 MB
Supported MSAA Modes: 2x 4x 8x

Sound card:
Audio device: Speakers (2- Logitech USB Heads

Memory:
RAM: 16345 Mb

Miscellaneous:
UI Language: English
Media Type: DVD
Total Hard Disk Space Available: 1067787 Mb
Largest Free Hard Disk Block: 604290 Mb
OS Install Date: Dec 31 1969
Game Controller: None detected
VR Headset: None detected


Any suggestion on increasing FPS, on the samples I am getting 5fps.

Thanks
Taco

The issue is likely your GPU is old and is below suggested specs for GameGuru. It will run slow without a GPU upgrade, the rest of your PC appears to be fine.

Yeah, the PC is about 5 years old, but the 560 is above the min (400 series), but below the recommended (660TI). So at min specs 5 fps would be normal?

I was looking at new PC's, but wanted to check if this was just a GPU issue. I read somewhere that once compiled the game runs better, is that what you have seen in your experience?

The current listed min specs for GameGuru really are too low for playable speeds, you won't get playable FPS in test games without having at least the recommended. Currently the engine is being updated to DirectX11, which will mean all the specs will be updated as a result. Meaning the current recommended specs will likely become the min specs after the update is released.

Often after you have compiled your game and added light maps it will run better than a test game but this isn't always the case, as with any game engine you as the designer need to do optimization work to make it run nice and smooth.

Also check this thread is will tell you what cards are recommended if you are thinking of a replacement https://forum.game-guru.com/thread/212251