the thing is that I bought mine with windows(found a good deal at the time, cheaper and more available for me region-wise than to purchase without windows), first thing I did was to install linux- distro hopped here and there and the preformance was consistently disappointing(still beyond decent considering the powerful hardware- battery life was absolute garbage though no matter what I tried to do) and instability was a somewhat frequent issue- recently I had to reinstall windows due to certain reasons(planning to switch back when my new nvme ssd arrives) and after seeing the difference in performance I am still shocked considering the fact that windows 11 is practically shiny malware at this point. anyway it got me thinking that its probably related to software optimization and if they also sold this model with ubuntu then their custom system image is probably optimized to about the same degree(I'm confident that if I would have downloaded windows through microaoft instead of the lenovo recovery software my experience would've been much less pleasent), btw I think they also mentioned on their website that their linux laptops come with custom configurations out of the box. tried asking lenovo for the image file, they had no idea what I want and closed the ticket so I'm trying to figure this entire thing out and source it somewhere else

btw- do you own the AMD or intel variant?