Also, you could make an app that helps hungry people get a free meal. The software would align all the desktop windows to pixel perfect layouts, and funnel all the profits to soup kitchens.

Edit: To clarify, I've tried streaming with OBS and never experienced this problem. I can use the trackpad and resize handles effectively. From the business side of things, I think the scale of the problem is so minute, there isn't a viable revenue flow to support a single developer working on this. Seriously, let's have a count of everyone who would purchase this app. Reply with commitment to buy if you're interested.