Recently I installed the latest ONE UI 5.0 via Odin and it was great but after a while I started noticing these bugs. Changing fonts was a laggy process, switching between tasks was jittery and there was battery drain. Today I installed the latest build which came out two weeks later; G998BXXS5DVK1. I have to say OMG Samsung, well done 👏 they fixed everything. I'm impressed and I am absolutely flummoxed by the level of goodness I'm getting. I haven't really tracked the SOT but I can already tell there's a big big difference just by using the phone.