Unless this is what happened, probably not. Considering the game works fine on Mac & Windows our guess is that it's not the game's code that's the problem, but some underlying Unity BS, like usual. Still, sorry about this.
First of all, your graphics card makes us jelly. Secondly, we haven't encountered any flashing on any platform ourselves, so I'm afraid we can't point you in a direction. Sorry :/
When we made pit width variable so it wouldn't be cramped if you're playing with friends, and not too wide if you're playing alone. So the narrower pits are really "how it's meant to be played" for singleplayer, but we didn't want to enforce that. We did a few things to balance this game, but we didn't feel like it was polished enough to justify a fair score-incentive for certain pit widths, and left them all the same.
I don't believe itch.io lets you upload images itself, but you could use a service like imgur, and then link the image.
Well holy shit, that is impressive. I have to beat you soon or I'll lose my own life. Also IIRC the multiplier is tied to the number of digits in seconds passed. Seconds 1-9 is x1. 10-99 is x2. 100-999 is x3 etc.
We used royalty free music composed by Daniel Gooding. I'm not sure if there is a way for you to download these tracks directly though. His website seems a bit out of date.
What happens is that most games nowadays do their computations based on a timestep that's tied directly to framerate. Here's a good thread about this. The tl;dr is that lower framerates don't just mean choppier visuals, but also choppier calculations. This can affect everything from physics to input. That's why games that run at 60fps invariably feel more responsive than at 30fps. With a lower resolution you get a higher framerate, meaning more accurate calculations, and thus more accurate movement.
I believe PayPal lets you check out with a credit card even without an account, but I may be mistaken. Support doesn't have to be monetary though. Another way would be to just share our game. And thank you :)
Sorry about the taunts though, it has been mentioned to us by others as well, so we'll probably adjust them a little. Currently you need 750+ points to get remarks that aren't as mean as the rest.
