Bleve…very good point, and another good reason to consider your optimum FL when requesting cruise level, especially when around CB activity or other potential turbulence situations.
I remember enroute Cun-Mxp, 2000’ above optimum in B767…..random track, with colleague on same routing, 20 mins behind. Enjoying 160kts average tailwind.
On encountering an unforecast 30nm band of mod/severe CAT at 30W, I had already made Pan calls on 121.5 and 128.95 to descend without clearance, ….when,.... my clearance came through on HF.
My colleague was duly warned and requested the same. Lucky to have been off busy OTS.
Downside of random track being no prior warning from traffic ahead…..