In my unscientific tests, sysctl/vm.page-cluster made a measurable difference (15% faster when setting it to 0), and it seems everyone else (PopOS, ChromeOS) tweaks at least this setting with ZRAM. I would assume the engineers at PopOS/ChromeOS also did some benchmarks before using this settings.
Now I really would be interested, if you would measure a difference on your 1gb potato SBCs, because IMHO it should even have a bigger impact for them. (Of course, your workload/use cases might make any difference irrelevant, and of course potato SBCs have other bottlenecks like WiFi/IO, which might make this totally irrelevant.