I've been on 5x for a couple of months and the closest I've got to my weekly limits is 75%. I've hit 5-hr limits twice (expected). I'm a solo dev that uses CC anywhere from 8-12+ hr each day, 7 days a week. I've never experienced any of the issues others complain about other than the feeling that my sessions feel a little more rushed. I'd say that overall I have very dialed-in context management which includes: breaking work across sessions in atomic units, svelte claude.md/rules (sub 150 lines), periodic memory audit/cleanup, good pre-compact discipline, and a few great commands that I use to transfer knowledge effectively between sessions, without leaving a trailing pile of detritus. Some may say that this is exhaustive, but I don't find it much different than maintaining Agile discipline.

This being said, I know I'm an outlier.