It's basically Exynos isn't it? Dunno if it is the chip... battery was good though. Tested it as an internet only phone not for calls etc (no sim card).
Also I need to clarify that the lag is not there in all apps but in quite few though. So it must be the architecture of apps and not the chip.
I tested a Pixel 8pro with GrapheneOS. The lag is awful for a device of such high price. Totally unacceptable. And it's not GrapheneOS fault I believe.
Thank you.