I moved from Kubuntu to Endeavor (Arch-based) and was also afraid of bleeding edge stuff breaking all the time. I gotta say I was pleasantly surprised by how stable it is. The only couple issues I had was 1 bad kernel version and vmware update. I learned how to roll back and avoid upgrading these 2 packages for a couple weeks until the new versions of both fixed everything. I was also reluctant to learn a new package manager since I already know apt, but yay is arguably easier to use than apt. My gaming has been great, no issues.