I use this setup on Zwift and I find that it does not run smooth enough even after servicing the bike especially when putting watts around the 300 . Was wondering if I could switch to a better crank thks
So it's not really an upgrade, there is something in the set up that's not quite right?
I suspect that you'll have to go through a long tick list to narrow down where the issue is.
Something like
- check indexing again (cables OK?)
- clean and lubricate all moving parts
- check chain (correct length? : rubbing anywhere?) and replace
- check cassette and replace
- check bottom bracket running free
- check chain ring being used
Good luck with your investigations