thanks for trying the game. I really appreciate it and even more for taking the time to write a comment. I still could not replicate this bug. Hence, so far I've been powerless to squash it properly. But I'll keep trying.
Hello, I think this information may be of some help. So as I stated above, the resolution of the game is way too big for my laptop monitor and I had to enable High DPI Scaling Override under Windows 10 Home edition. Furthermore, what's interesting is that when I switch my graphics card from my default Intel Graphics 620 to my dedicated AMD Radeon R7 M445, the flickering went away! I suspect that this may have to do with a compatibility issue with the Intel integrated graphics.
Also, I was not expecting the plot twist at the end :)
I hope you'll work on a sequel or something.