fpvfreerider  gets frozen sporadically after 2-5 minutes play .  

Windows 10, Intel core i7  - 4712MQ , 64bit, fullhd

Starting it up with "-force-d3d9"  command line option seems  to help.

Output_log.tx contains these lines:

--Initialize engine version: 5.4.1f1 (649f48bbbf0f)
GfxDevice: creating device client; threaded=1
Direct3D:
    Version:  Direct3D 11.0 [level 11.0]
    Renderer: Intel(R) HD Graphics 4600 (ID=0x416)
    Vendor:   Intel
    VRAM:     1136 MB
Begin MonoManager ReloadAssembly

...

(Filename:  Line: 531)

d3d11: failed to create 2D texture shader resource view id=920 [D3D error was 80070057]

 
(Filename:  Line: 550)

d3d11: failed to create 2D texture id=922 width=256 height=256 mips=1 dxgifmt=71 [D3D error was 887a0005]

 
(Filename:  Line: 531)

d3d11: failed to create 2D texture shader resource view id=922 [D3D error was 80070057]

 
(Filename:  Line: 550)

UnloadTime: 4.468286 ms

Unloading 324 unused Assets to reduce memory usage. Loaded Objects now: 546.
Total: 3.516884 ms (FindLiveObjects: 0.060243 ms CreateObjectMapping: 0.045963 ms MarkObjects: 0.609575 ms  DeleteObjects: 2.800209 ms)

d3d11: failed to create vertex buffer of size 68160 [0x887A0005]
d3d11: failed to create index buffer of size 3408 [0x887A0005]
d3d11: attempt to lock null vertex buffer
d3d11: attempt to lock null index buffer
D3D11: Failed to create RenderTexture (1536 x 864 fmt 44 aa 1), error 0x887a0005
 
(Filename:  Line: 308)

d3d11: attempt to lock null vertex buffer
d3d11: attempt to lock null index buffer
d3d11: attempt to lock null vertex buffer

Thanks for reporting. Does it happen on a specific map or all of them?

If I were you I would check if my graphics card drivers are updated to the latest version if you haven't done so already.