I really can’t answer this too well. Personally, if you were to keep the Flint 1, I would probably replace your ISP router (since those are usually garbage anyway). You might want to compare the specs to make sure its an upgrade. Though if your goal is to maximize performance, I am not sure why you would keep the Flint 1 when the Flint 2 just came out. You may want to look at this comparison chart and look at the Wireguard MAX speed: Product Comparison - GL.iNet since that is probably what matters more than CPU or memory (at least in this use case). Realistically, you are likely to be hindered by your remote internet speed before you hit any theoretical limits of the router, so I would be less concerned about individual specs, and more concerned about how you want your “layout” to be. If you want to do a smidgeon extra configuration, I would replace the ISP router and replace it with a Flint 2. ISP routers are typically mediocre, and if I am going through the effort, I might as well get the “best” home router Gl-inet offers. If you are happy with your ISP router, a Brume 2 probably makes the most sense since you really do NOT need two wireless routers. Your ISP router will serve up your wifi to your home, and the Brume2 would be a dedicated VPN endpoint basically. Though you CAN place your Flint 1 behind your ISP router, and just turn off the wifi on it. That’s not “wrong” either (especially if you don’t want to return anything and buy something new), its just a little goofy from a hardware choice perspective. None of these options are “wrong”, its just more of what you prefer, how much you want to spend, and what your comfort level is with configuring/re-configuring your home wireless on the Flint 1/2 (or not). And in the real world, I suspect the performance will be nearly identical across any configuration.