If you're trying to maximize kudos per hour in Old School, I usually chase the short, repeatable activities that hand out consistent rewards. In my experience, the fastest kudos come from team-based minigames where rounds are short and you can queue back-to-back: think 'Pest Control', 'Barbarian Assault', and 'Castle Wars'. Those sessions are predictable — you learn the flow, shave seconds off transitions, and stack small wins into a big hourly total. I tend to focus on roles or routes that let me contribute steadily without waiting for a full team to coalesce; that way downtime is minimal.
On the flip side, fast
solo activities with high turnover are great if you're running solo: efficient clue scrolls (easy and medium), short Slayer tasks like 'Zulrah' or 'Vorkath' if you're geared and practiced, or quick barrows runs. Raids like 'Chambers of Xeric' and 'Theatre of Blood' can give excellent kudos if you can complete runs reliably and fast, but they're more swingy — a wipe costs time, so consistency matters more than raw potential. Personally I alternate between team minigames on social nights and solo speedruns on grinding afternoons.
Practical tips that helped me raise my kudos/hour: optimize your bank/preset to
Cut prep time, group up with a regular team for minigames so you waste zero minutes forming parties, and track your own runs for a day to spot where you're losing time (teleports, inventory tweaks, inefficient routes). That little time audit made the biggest difference for me; suddenly my hours felt way more productive, and I actually enjoy the grind more.