Bug Problem with DX11 crashing the game

Good afternoon, i'm on Unity 2018.3.9f, i know a pretty old version. I've got a pretty big app, part of a multi module architecture for simulation. The viewer in this version is required for motives not related to the bug i'm experiencing.

Randomly while executing (more often on pcs with multiple instances of the application) one of the viewer dies, but just the rendering! The application keeps working, in fact i can send commands to it via udp message which are computed by a secondary thread.

The issue causing the crash is this one, it appears many many times on the output_log, only when the game crashes.

Code (Boo):

1. D3D11: Failed to create RenderTexture (8 x 8 fmt 53 aa 1), error 0x887a0005
2. (Filename:  Line: 219)
3.  
4. d3d11: failed to create staging 2D texture w=128 h=2 d3dfmt=10 [887a0005]
5. d3d11: failed to create staging 2D texture w=128 h=128 d3dfmt=2 [887a0005]
6. d3d11: failed to create staging 2D texture w=128 h=128 d3dfmt=2 [887a0005]
7. d3d11: failed to create staging 2D texture w=128 h=128 d3dfmt=2 [887a0005]
8. d3d11: failed to create staging 2D texture w=128 h=2 d3dfmt=10 [887a0005]
9. d3d11: failed to create staging 2D texture w=128 h=128 d3dfmt=2 [887a0005]
10. d3d11: failed to create staging 2D texture w=128 h=128 d3dfmt=2 [887a0005]
11. d3d11: failed to create staging 2D texture w=128 h=128 d3dfmt=2 [887a0005]
12. d3d11: failed to create staging 2D texture w=128 h=2 d3dfmt=10 [887a0005]

I'm gonna attach the output_log complete. Need an help - i can't attach it cause its 33mb, i split it but it just keeps repeating the same rows, i add another log with an actual crash as well!

ps. i already found the other posts on the forum talking about updating the drivers etc and i already did that without results.

 

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